[C++] Adjust the names (script, sample folder, generator) to lang option (#220)

* Rename script: qt5-petstore.sh -> cpp-qt5-petstore.sh

* Rename sample folder: qt5cpp -> cpp-qt5

* Rename script: cpprest-petstore.sh -> cpp-restsdk-petstore.sh

* Rename sample folder: cpprest -> cpp-restsdk

* Rename generator: CppRestClientCodegen -> CppRestSdkClientCodegen

* Rename script: tizen-petstore.sh -> cpp-tizen-petstore.sh

* Rename sample folder: tizen -> cpp-tizen

* Rename script(security): qt5cpp-petstore.sh -> cpp-qt5-petstore.sh

* Rename sample folder(security): qt5cpp -> cpp-qt5

* Rename script(windows): qt5cpp-petstore.bat -> cpp-qt5-petstore.bat

* Change sample folder

* Rename script(windows): cpprest-petstore.bat -> cpp-restsdk-petstore.bat

* Change sample folder

* Rename script(windows): tizen-petstore.bat -> cpp-tizen-petstore.bat

* Change sample folder

* Change output folder: tizen -> cpp-tizen

* Rename the scripts under bin/openapi3

cpp-restsdk is not exist under bin/openapi3

* Change sample folder

samples/client/petstore/cpp-qt5/PetStore/PetApiTests.h

@@ -0,0 +1,34 @@
+#ifndef PETAPITESTS_H
+#define PETAPITESTS_H
+
+#include <QtTest/QtTest>
+#include <QTimer>
+
+#include "../client/OAIPetApi.h"
+
+using namespace OpenAPI;
+
+class PetApiTests: public QObject {
+Q_OBJECT
+public:
+    PetApiTests();
+    virtual ~PetApiTests();
+
+    static void runTests();
+
+private:
+    OAIPetApi* getApi();
+    OAIPet* createRandomPet();
+
+signals:
+    void quit();
+    bool success();
+
+private slots:
+    void findPetsByStatusTest();
+    void createAndGetPetTest();
+    void updatePetTest();
+    void updatePetWithFormTest();
+};
+
+#endif // PETAPITESTS_H