[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/model/User.cpp

@@ -0,0 +1,148 @@
+/**
+ * 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 "User.h"
+
+#include <string>
+#include <sstream>
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/json_parser.hpp>
+
+using boost::property_tree::ptree;
+using boost::property_tree::read_json;
+using boost::property_tree::write_json;
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+User::User()
+{
+    m_Id = 0L;
+    m_Username = "";
+    m_FirstName = "";
+    m_LastName = "";
+    m_Email = "";
+    m_Password = "";
+    m_Phone = "";
+    m_UserStatus = 0;
+    
+}
+
+User::~User()
+{
+}
+
+std::string User::toJsonString()
+{
+	std::stringstream ss;
+	ptree pt;
+	pt.put("Id", m_Id);
+	pt.put("Username", m_Username);
+	pt.put("FirstName", m_FirstName);
+	pt.put("LastName", m_LastName);
+	pt.put("Email", m_Email);
+	pt.put("Password", m_Password);
+	pt.put("Phone", m_Phone);
+	pt.put("UserStatus", m_UserStatus);
+	write_json(ss, pt, false);
+	return ss.str();
+}
+
+void User::fromJsonString(std::string const& jsonString)
+{
+	std::stringstream ss(jsonString);
+	ptree pt;
+	read_json(ss,pt);
+	m_Id = pt.get("Id", 0L);
+	m_Username = pt.get("Username", "");
+	m_FirstName = pt.get("FirstName", "");
+	m_LastName = pt.get("LastName", "");
+	m_Email = pt.get("Email", "");
+	m_Password = pt.get("Password", "");
+	m_Phone = pt.get("Phone", "");
+	m_UserStatus = pt.get("UserStatus", 0);
+}
+
+int64_t User::getId() const
+{
+    return m_Id;
+}
+void User::setId(int64_t value)
+{
+    m_Id = value;
+}
+std::string User::getUsername() const
+{
+    return m_Username;
+}
+void User::setUsername(std::string value)
+{
+    m_Username = value;
+}
+std::string User::getFirstName() const
+{
+    return m_FirstName;
+}
+void User::setFirstName(std::string value)
+{
+    m_FirstName = value;
+}
+std::string User::getLastName() const
+{
+    return m_LastName;
+}
+void User::setLastName(std::string value)
+{
+    m_LastName = value;
+}
+std::string User::getEmail() const
+{
+    return m_Email;
+}
+void User::setEmail(std::string value)
+{
+    m_Email = value;
+}
+std::string User::getPassword() const
+{
+    return m_Password;
+}
+void User::setPassword(std::string value)
+{
+    m_Password = value;
+}
+std::string User::getPhone() const
+{
+    return m_Phone;
+}
+void User::setPhone(std::string value)
+{
+    m_Phone = value;
+}
+int32_t User::getUserStatus() const
+{
+    return m_UserStatus;
+}
+void User::setUserStatus(int32_t value)
+{
+    m_UserStatus = value;
+}
+
+}
+}
+}
+}
+