Move ValidatorGenerator to the generate package

Author: yevhenii-nadtochii

java/src/main/kotlin/io/spine/validation/java/JavaValidationPlugin.kt

@@ -31,8 +31,8 @@ import io.spine.validation.ValidationPlugin
 import io.spine.validation.api.DiscoveredValidators
 import io.spine.validation.api.ValidationOption
 import io.spine.validation.java.setonce.SetOnceRenderer
-import io.spine.validation.java.validator.MessageClass
-import io.spine.validation.java.validator.ValidatorClass
+import io.spine.validation.java.generate.MessageClass
+import io.spine.validation.java.generate.ValidatorClass
 import java.io.File
 import java.util.*
 

java/src/main/kotlin/io/spine/validation/java/JavaValidationRenderer.kt

@@ -53,9 +53,9 @@ import io.spine.validation.java.generate.option.RequireOptionGenerator
 import io.spine.validation.java.generate.option.RequiredGenerator
 import io.spine.validation.java.generate.option.ValidateGenerator
 import io.spine.validation.java.generate.option.WhenGenerator
-import io.spine.validation.java.validator.MessageClass
-import io.spine.validation.java.validator.ValidatorClass
-import io.spine.validation.java.validator.ValidatorGenerator
+import io.spine.validation.java.generate.MessageClass
+import io.spine.validation.java.generate.ValidatorClass
+import io.spine.validation.java.generate.ValidatorGenerator
 
 /**
  * The main Java renderer of the validation library.

java/src/main/kotlin/io/spine/validation/java/validator/ValidatorGenerator.kt renamed to java/src/main/kotlin/io/spine/validation/java/generate/ValidatorGenerator.kt

@@ -24,7 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-package io.spine.validation.java.validator
+package io.spine.validation.java.generate
 
 import com.google.protobuf.Message
 import io.spine.base.FieldPath