[cpp-restbed] Added "out-of-the-box" functionality (#4759)

* Added cpp-restbed "out-of-the-box" functionality
* handling class dependencies
* added method override to clean interfaces of ambiguity
* added default values for shared pointers
* fixed _name and name parameters generating the same getters and setters
* updated enum handling
* updated Petstore samples
* updated templates for automated object generation

* fix whitespace

* removed model initialisation

* added model brace initialisation

samples/server/petstore/cpp-restbed/model/User.h

@@ -5,7 +5,7 @@
  * The version of the OpenAPI document: 1.0.0
  * 
  *
- * NOTE: This class is auto generated by OpenAPI-Generator 4.2.0-SNAPSHOT.
+ * NOTE: This class is auto generated by OpenAPI-Generator unset.
  * https://openapi-generator.tech
  * Do not edit the class manually.
  */
@@ -23,6 +23,7 @@
 
 #include <string>
 #include <memory>
+#include <boost/property_tree/ptree.hpp>
 
 namespace org {
 namespace openapitools {
@@ -32,59 +33,67 @@ namespace model {
 /// <summary>
 /// A User who is purchasing from the pet store
 /// </summary>
-class  User
+class  User 
 {
 public:
     User();
     virtual ~User();
     
-    std::string toJsonString();
+    std::string toJsonString(bool prettyJson = false);
     void fromJsonString(std::string const& jsonString);
+    boost::property_tree::ptree toPropertyTree();
+    void fromPropertyTree(boost::property_tree::ptree const& pt);
 
     /////////////////////////////////////////////
     /// User members
-    
+
     /// <summary>
     /// 
     /// </summary>
     int64_t getId() const;
     void setId(int64_t value);
+
     /// <summary>
     /// 
     /// </summary>
     std::string getUsername() const;
     void setUsername(std::string value);
+
     /// <summary>
     /// 
     /// </summary>
     std::string getFirstName() const;
     void setFirstName(std::string value);
+
     /// <summary>
     /// 
     /// </summary>
     std::string getLastName() const;
     void setLastName(std::string value);
+
     /// <summary>
     /// 
     /// </summary>
     std::string getEmail() const;
     void setEmail(std::string value);
+
     /// <summary>
     /// 
     /// </summary>
     std::string getPassword() const;
     void setPassword(std::string value);
+
     /// <summary>
     /// 
     /// </summary>
     std::string getPhone() const;
     void setPhone(std::string value);
+
     /// <summary>
     /// User Status
     /// </summary>
     int32_t getUserStatus() const;
     void setUserStatus(int32_t value);
-
 protected:
     int64_t m_Id;
     std::string m_Username;