Refactor chat system: Introduce ChatRoom and ChatUser classes

- Created ChatRoom class to manage chat room functionalities, including user management, message handling, and game mechanics.
- Developed ChatUser class to represent individual users, handling user-specific actions and interactions within chat rooms.
- Implemented a Config class for loading configuration settings from a JSON file.
- Established a Server class to manage connections, handle requests, and facilitate communication between users and chat rooms.
- Introduced a Database class for database interactions, utilizing PostgreSQL for user and room data management.
- Added utility functions in the Base class for JSON handling and socket communication.
- Created Object classes for Room and User to encapsulate their properties and behaviors.
- Updated main function to initialize server and load chat rooms from configuration.

src/lib/base.h

@@ -0,0 +1,21 @@
+#ifndef YC_LIB_BASE_H
+#define YC_LIB_BASE_H
+
+#include <json/json.h>
+
+namespace Yc {
+    namespace Lib {
+
+        class Base {
+        protected:
+            std::string getJsonString(Json::Value json);
+            void send(int socket, std::string out);
+            void send(int socket, Json::Value out);
+            std::string readSocket(int socket);
+            Json::Value getJsonTree(std::string msg);
+        };
+
+    } // namespace Lib
+} // namespace Yc
+
+#endif // YC_LIB_BASE_H