langchain4j-ollama get rid of lombok (langchain4j#1658)

## Issue
langchain4j#1636 

## Change
`langchain4j-ollama` get rid of `lombok`

## General checklist
- [x] There are no breaking changes
- [ ] I have added unit and integration tests for my change
- [x] I have manually run all the unit and integration tests in the
module I have added/changed, and they are all green
- [x] I have manually run all the unit and integration tests in the
[core](https://github.com/langchain4j/langchain4j/tree/main/langchain4j-core)
and
[main](https://github.com/langchain4j/langchain4j/tree/main/langchain4j)
modules, and they are all green
<!-- Before adding documentation and example(s) (below), please wait
until the PR is reviewed and approved. -->
- [ ] I have added/updated the
[documentation](https://github.com/langchain4j/langchain4j/tree/main/docs/docs)
- [ ] I have added an example in the [examples
repo](https://github.com/langchain4j/langchain4j-examples) (only for
"big" features)
- [ ] I have added/updated [Spring Boot
starter(s)](https://github.com/langchain4j/langchain4j-spring) (if
applicable)

langchain4j-ollama/pom.xml

@@ -50,12 +50,6 @@
         </dependency>
         <!-- DEPENDENCY CONFLICT RESOLUTION FOR OKHTTP (END)  -->
 
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <scope>provided</scope>
-        </dependency>
-
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-engine</artifactId>

langchain4j-ollama/src/main/java/dev/langchain4j/model/ollama/ChatRequest.java

@@ -4,19 +4,11 @@
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies.SnakeCaseStrategy;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
-import lombok.AllArgsConstructor;
-import lombok.Builder;
-import lombok.Data;
-import lombok.NoArgsConstructor;
 
 import java.util.List;
 
 import static com.fasterxml.jackson.annotation.JsonInclude.Include.NON_NULL;
 
-@Data
-@NoArgsConstructor
-@AllArgsConstructor
-@Builder
 @JsonIgnoreProperties(ignoreUnknown = true)
 @JsonInclude(NON_NULL)
 @JsonNaming(SnakeCaseStrategy.class)
@@ -28,4 +20,113 @@ class ChatRequest {
     private String format;
     private Boolean stream;
     private List<Tool> tools;
+
+    ChatRequest() {
+
+    }
+
+    ChatRequest(String model, List<Message> messages, Options options, Boolean stream, List<Tool> tools, String format) {
+        this.model = model;
+        this.messages = messages;
+        this.options = options;
+        this.stream = stream;
+        this.tools = tools;
+        this.format = format;
+    }
+
+    static Builder builder() {
+        return new Builder();
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+
+    public List<Message> getMessages() {
+        return messages;
+    }
+
+    public void setMessages(List<Message> messages) {
+        this.messages = messages;
+    }
+
+    public Options getOptions() {
+        return options;
+    }
+
+    public void setOptions(Options options) {
+        this.options = options;
+    }
+
+    public String getFormat() {
+        return format;
+    }
+
+    public void setFormat(String format) {
+        this.format = format;
+    }
+
+    public Boolean getStream() {
+        return stream;
+    }
+
+    public void setStream(Boolean stream) {
+        this.stream = stream;
+    }
+
+    public List<Tool> getTools() {
+        return tools;
+    }
+
+    public void setTools(List<Tool> tools) {
+        this.tools = tools;
+    }
+
+    static class Builder {
+
+        private String model;
+        private List<Message> messages;
+        private Options options;
+        private String format;
+        private Boolean stream;
+        private List<Tool> tools;
+
+        Builder model(String model) {
+            this.model = model;
+            return this;
+        }
+
+        Builder messages(List<Message> messages) {
+            this.messages = messages;
+            return this;
+        }
+
+        Builder options(Options options) {
+            this.options = options;
+            return this;
+        }
+
+        Builder format(String format) {
+            this.format = format;
+            return this;
+        }
+
+        Builder stream(Boolean stream) {
+            this.stream = stream;
+            return this;
+        }
+
+        Builder tools(List<Tool> tools) {
+            this.tools = tools;
+            return this;
+        }
+
+        ChatRequest build() {
+            return new ChatRequest(model, messages, options, stream, tools, format);
+        }
+    }
 }

langchain4j-ollama/src/main/java/dev/langchain4j/model/ollama/ChatResponse.java

@@ -4,17 +4,9 @@
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies.SnakeCaseStrategy;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
-import lombok.AllArgsConstructor;
-import lombok.Builder;
-import lombok.Data;
-import lombok.NoArgsConstructor;
 
 import static com.fasterxml.jackson.annotation.JsonInclude.Include.NON_NULL;
 
-@Data
-@NoArgsConstructor
-@AllArgsConstructor
-@Builder
 @JsonIgnoreProperties(ignoreUnknown = true)
 @JsonInclude(NON_NULL)
 @JsonNaming(SnakeCaseStrategy.class)
@@ -26,4 +18,113 @@ class ChatResponse {
     private Boolean done;
     private Integer promptEvalCount;
     private Integer evalCount;
+
+    ChatResponse() {
+
+    }
+
+    ChatResponse(String model, String createdAt, Message message, Boolean done, Integer promptEvalCount, Integer evalCount) {
+        this.model = model;
+        this.createdAt = createdAt;
+        this.message = message;
+        this.done = done;
+        this.promptEvalCount = promptEvalCount;
+        this.evalCount = evalCount;
+    }
+
+    static Builder builder() {
+        return new Builder();
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+
+    public String getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(String createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public Message getMessage() {
+        return message;
+    }
+
+    public void setMessage(Message message) {
+        this.message = message;
+    }
+
+    public Boolean getDone() {
+        return done;
+    }
+
+    public void setDone(Boolean done) {
+        this.done = done;
+    }
+
+    public Integer getPromptEvalCount() {
+        return promptEvalCount;
+    }
+
+    public void setPromptEvalCount(Integer promptEvalCount) {
+        this.promptEvalCount = promptEvalCount;
+    }
+
+    public Integer getEvalCount() {
+        return evalCount;
+    }
+
+    public void setEvalCount(Integer evalCount) {
+        this.evalCount = evalCount;
+    }
+
+    static class Builder {
+
+        private String model;
+        private String createdAt;
+        private Message message;
+        private Boolean done;
+        private Integer promptEvalCount;
+        private Integer evalCount;
+
+        Builder model(String model) {
+            this.model = model;
+            return this;
+        }
+
+        Builder createdAt(String createdAt) {
+            this.createdAt = createdAt;
+            return this;
+        }
+
+        Builder message(Message message) {
+            this.message = message;
+            return this;
+        }
+
+        Builder done(Boolean done) {
+            this.done = done;
+            return this;
+        }
+
+        Builder promptEvalCount(Integer promptEvalCount) {
+            this.promptEvalCount = promptEvalCount;
+            return this;
+        }
+
+        Builder evalCount(Integer evalCount) {
+            this.evalCount = evalCount;
+            return this;
+        }
+
+        ChatResponse build() {
+            return new ChatResponse(model, createdAt, message, done, promptEvalCount, evalCount);
+        }
+    }
 }