[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-restsdk/ApiConfiguration.cpp

@@ -0,0 +1,80 @@
+/**
+ * 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.
+ */
+
+#include "ApiConfiguration.h"
+
+namespace org {
+namespace openapitools {
+namespace client {
+namespace api {
+
+ApiConfiguration::ApiConfiguration()
+{
+}
+
+ApiConfiguration::~ApiConfiguration()
+{
+}
+
+web::http::client::http_client_config& ApiConfiguration::getHttpConfig()
+{
+    return m_HttpConfig;
+}
+
+void ApiConfiguration::setHttpConfig( web::http::client::http_client_config& value )
+{
+    m_HttpConfig = value;
+}
+
+utility::string_t ApiConfiguration::getBaseUrl() const
+{
+    return m_BaseUrl;
+}
+
+void ApiConfiguration::setBaseUrl( const utility::string_t value )
+{
+    m_BaseUrl = value;
+}
+
+utility::string_t ApiConfiguration::getUserAgent() const
+{
+    return m_UserAgent;
+}
+
+void ApiConfiguration::setUserAgent( const utility::string_t value )
+{
+    m_UserAgent = value;
+}
+
+std::map<utility::string_t, utility::string_t>& ApiConfiguration::getDefaultHeaders()
+{
+    return m_DefaultHeaders;
+}
+
+utility::string_t ApiConfiguration::getApiKey( const utility::string_t& prefix) const
+{
+    auto result = m_ApiKeys.find(prefix);
+    if( result != m_ApiKeys.end() )
+    {
+        return result->second;
+    }
+    return utility::conversions::to_string_t("");
+}
+
+void ApiConfiguration::setApiKey( const utility::string_t& prefix, const utility::string_t& apiKey )
+{
+    m_ApiKeys[prefix] = apiKey;
+}
+
+}
+}
+}
+}