Added Int, List, Boolean and Double parameter

Author: derNiklaas

src/main/java/org/codeoverflow/chatoverflow/api/io/parameter/BooleanParameter.java

@@ -0,0 +1,7 @@
+package org.codeoverflow.chatoverflow.api.io.parameter;
+
+import org.codeoverflow.chatoverflow.api.IsRequirement;
+
+@IsRequirement
+public interface BooleanParameter extends Parameter<Boolean> {
+}

src/main/java/org/codeoverflow/chatoverflow/api/io/parameter/DoubleParameter.java

@@ -0,0 +1,7 @@
+package org.codeoverflow.chatoverflow.api.io.parameter;
+
+import org.codeoverflow.chatoverflow.api.IsRequirement;
+
+@IsRequirement
+public interface DoubleParameter extends Parameter<Double> {
+}

src/main/java/org/codeoverflow/chatoverflow/api/io/parameter/IntegerParameter.java

@@ -0,0 +1,10 @@
+package org.codeoverflow.chatoverflow.api.io.parameter;
+
+import org.codeoverflow.chatoverflow.api.IsRequirement;
+
+/**
+ * a {@link Parameter} that is a integer
+ */
+@IsRequirement
+public interface IntegerParameter extends Parameter<Integer> {
+}

src/main/java/org/codeoverflow/chatoverflow/api/io/parameter/ListParameter.java

@@ -0,0 +1,9 @@
+package org.codeoverflow.chatoverflow.api.io.parameter;
+
+import org.codeoverflow.chatoverflow.api.IsRequirement;
+
+import java.util.List;
+
+@IsRequirement
+public interface ListParameter extends Parameter<List<String>>{
+}