[C++ server] Adjust the names (script, sample folder, generator) to lang option (#250)

* Renamce C++ server scripts

* Change output folder

* Rename sample folder: pistache-server -> cpp-pistache

* Rename sample folder: restbed -> cpp-restbed

samples/server/petstore/cpp-restbed/api/PetApi.h

@@ -0,0 +1,129 @@
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI-Generator 3.0.0-SNAPSHOT.
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+/*
+ * PetApi.h
+ *
+ * 
+ */
+
+#ifndef PetApi_H_
+#define PetApi_H_
+
+
+#include <memory>
+#include <corvusoft/restbed/session.hpp>
+#include <corvusoft/restbed/resource.hpp>
+#include <corvusoft/restbed/service.hpp>
+
+#include "ApiResponse.h"
+#include "Pet.h"
+#include <string>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::model;
+
+class  PetApi: public restbed::Service
+{
+public:
+	PetApi();
+	~PetApi();
+	void startService(int const& port);
+	void stopService();
+};
+
+
+/// <summary>
+/// Add a new pet to the store
+/// </summary>
+/// <remarks>
+/// 
+/// </remarks>
+class  PetApiPetResource: public restbed::Resource
+{
+public:
+	PetApiPetResource();
+    virtual ~PetApiPetResource();
+    void POST_method_handler(const std::shared_ptr<restbed::Session> session);
+    void PUT_method_handler(const std::shared_ptr<restbed::Session> session);
+};
+
+/// <summary>
+/// Deletes a pet
+/// </summary>
+/// <remarks>
+/// 
+/// </remarks>
+class  PetApiPetPetIdResource: public restbed::Resource
+{
+public:
+	PetApiPetPetIdResource();
+    virtual ~PetApiPetPetIdResource();
+    void DELETE_method_handler(const std::shared_ptr<restbed::Session> session);
+    void GET_method_handler(const std::shared_ptr<restbed::Session> session);
+    void POST_method_handler(const std::shared_ptr<restbed::Session> session);
+};
+
+/// <summary>
+/// Finds Pets by status
+/// </summary>
+/// <remarks>
+/// Multiple status values can be provided with comma separated strings
+/// </remarks>
+class  PetApiPetFindByStatusResource: public restbed::Resource
+{
+public:
+	PetApiPetFindByStatusResource();
+    virtual ~PetApiPetFindByStatusResource();
+    void GET_method_handler(const std::shared_ptr<restbed::Session> session);
+};
+
+/// <summary>
+/// Finds Pets by tags
+/// </summary>
+/// <remarks>
+/// Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+/// </remarks>
+class  PetApiPetFindByTagsResource: public restbed::Resource
+{
+public:
+	PetApiPetFindByTagsResource();
+    virtual ~PetApiPetFindByTagsResource();
+    void GET_method_handler(const std::shared_ptr<restbed::Session> session);
+};
+
+/// <summary>
+/// uploads an image
+/// </summary>
+/// <remarks>
+/// 
+/// </remarks>
+class  PetApiPetPetIdUploadImageResource: public restbed::Resource
+{
+public:
+	PetApiPetPetIdUploadImageResource();
+    virtual ~PetApiPetPetIdUploadImageResource();
+    void POST_method_handler(const std::shared_ptr<restbed::Session> session);
+};
+
+
+}
+}
+}
+}
+
+#endif /* PetApi_H_ */
+