[kotlin][client] make Request date converter toJson as default (#4884)

* Fix for Issue #2205

Because when we have tags on OpenAPI Specification, there can be more than 1 Feign Beans being generated and the title field is share by all the clients. This makes the code to stop working in runtime.
Here is a PR which uses the classVarName instead, which follows the standards and should be enough to solve this issue.

For more info please refer to: https://github.com/OpenAPITools/openapi-generator/issues/2205

* fix java feign parameter request name (#4883)

* update sprign cloud feign sample

* [JAVA][SPRING][2195] added missing getter for enum value (#2346)

* [2195] added missing getter for enum value

* updated samples

* re-generate spring samples

* Removed @JsonValue from toString and regenerated samples

* re-generate spring samples

Co-authored-by: Esteban Gehring <esteban.gehring@gmail.com>

* update samples

* [kotlin][client] make Request date converter toJson as default

* [kotlin][client] update windows scripts

* [kotlin][client] update docs

* [kotlin][client] update scripts

* [kotlin][client] update scripts

Co-authored-by: Filipe Manuel Couto Pinheiro <filipemcpinheiro@gmail.com>
Co-authored-by: William Cheng <wing328hk@gmail.com>
Co-authored-by: Lukáš Vasek <bilaak@gmail.com>
Co-authored-by: Esteban Gehring <esteban.gehring@gmail.com>

samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/BigCat.java

@@ -35,8 +35,12 @@ public class BigCat extends Cat  {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }

samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/BigCatAllOf.java

@@ -33,8 +33,12 @@ public class BigCatAllOf   {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }

samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumArrays.java

@@ -31,8 +31,12 @@ public class EnumArrays   {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }
@@ -65,8 +69,12 @@ public class EnumArrays   {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }

samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumClass.java

@@ -25,8 +25,12 @@ public enum EnumClass {
     this.value = value;
   }
 
-  @Override
   @JsonValue
+  public String getValue() {
+    return value;
+  }
+
+  @Override
   public String toString() {
     return String.valueOf(value);
   }

samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumTest.java

@@ -32,8 +32,12 @@ public class EnumTest   {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }
@@ -68,8 +72,12 @@ public class EnumTest   {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }
@@ -102,8 +110,12 @@ public class EnumTest   {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public Integer getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }
@@ -136,8 +148,12 @@ public class EnumTest   {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public Double getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }

samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/MapTest.java

@@ -36,8 +36,12 @@ public class MapTest   {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }

samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Order.java

@@ -44,8 +44,12 @@ public class Order   {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }

samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/OuterEnum.java

@@ -25,8 +25,12 @@ public enum OuterEnum {
     this.value = value;
   }
 
-  @Override
   @JsonValue
+  public String getValue() {
+    return value;
+  }
+
+  @Override
   public String toString() {
     return String.valueOf(value);
   }

samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Pet.java

@@ -52,8 +52,12 @@ public class Pet   {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }