[Go][client] Re-add deleted model template files (#7423)

* [Go][client] Re-add deleted model template files

* Regenerate samples

Author: Slavek Kabrda

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GoClientCodegen.java

@@ -87,6 +87,7 @@ public GoClientCodegen() {
         usesOptionals = false;
 
         apiTemplateFiles.put("api.mustache", ".go");
+        modelTemplateFiles.put("model.mustache", ".go");
         modelDocTemplateFiles.put("model_doc.mustache", ".md");
         apiDocTemplateFiles.put("api_doc.mustache", ".md");
 

samples/client/petstore/go/go-petstore/.openapi-generator/FILES

@@ -67,5 +67,53 @@ docs/XmlItem.md
 git_push.sh
 go.mod
 go.sum
+model_200_response.go
+model_additional_properties_any_type.go
+model_additional_properties_array.go
+model_additional_properties_boolean.go
+model_additional_properties_class.go
+model_additional_properties_integer.go
+model_additional_properties_number.go
+model_additional_properties_object.go
+model_additional_properties_string.go
+model_animal.go
+model_api_response.go
+model_array_of_array_of_number_only.go
+model_array_of_number_only.go
+model_array_test_.go
+model_big_cat.go
+model_big_cat_all_of.go
+model_capitalization.go
+model_cat.go
+model_cat_all_of.go
+model_category.go
+model_class_model.go
+model_client.go
+model_dog.go
+model_dog_all_of.go
+model_enum_arrays.go
+model_enum_class.go
+model_enum_test_.go
+model_file.go
+model_file_schema_test_class.go
+model_format_test_.go
+model_has_only_read_only.go
+model_list.go
+model_map_test_.go
+model_mixed_properties_and_additional_properties_class.go
+model_name.go
+model_number_only.go
+model_order.go
+model_outer_composite.go
+model_outer_enum.go
+model_pet.go
+model_read_only_first.go
+model_return.go
+model_special_model_name.go
+model_tag.go
+model_type_holder_default.go
+model_type_holder_example.go
+model_user.go
+model_xml_item.go
 response.go
 utils.go