Refactor chat room implementation

- Renamed Room class to ChatRoom and updated all references accordingly.
- Removed the old room.cpp and room.h files.
- Updated CMakeLists.txt to include chat_room.cpp instead of room.cpp.
- Modified ChatUser class to use shared_ptr<ChatRoom> instead of shared_ptr<Room>.
- Updated Server class to create instances of ChatRoom instead of Room.
- Removed User class and its associated files, integrating its functionality into ChatUser.
- Ensured all relevant includes and dependencies are updated to reflect the new class structure.

chat_user.h

@@ -1,21 +1,18 @@
 #ifndef YC_LIB_CHAT_USER_H
 #define YC_LIB_CHAT_USER_H
 
-
 #include <memory>
 #include <string>
 #include <set>
 #include <json/json.h>
 #include <thread>
-
-
 #include "base.h"
-// Forward declaration to break cyclic dependency
-namespace Yc { namespace Lib { class Room; } }
 
 namespace Yc {
 namespace Lib {
 
+class ChatRoom;
+
 class ChatUser: public Base, public std::enable_shared_from_this<ChatUser> {
 public:
     enum MsgType {
@@ -31,7 +28,7 @@ public:
         result = 9
     };
 
-    ChatUser(std::shared_ptr<Room> parent, std::string name, std::string color, int socket);
+    ChatUser(std::shared_ptr<ChatRoom> parent, std::string name, std::string color, int socket);
     ~ChatUser();
     std::string name() const;
     bool validateToken(std::string token);
@@ -42,10 +39,10 @@ public:
     void checkerTask();
     void stop();
     std::string color() const;
-    void setParent(std::shared_ptr<Room> parent);
+    void setParent(std::shared_ptr<ChatRoom> parent);
 
 private:
-    std::shared_ptr<Room> _parent;
+    std::shared_ptr<ChatRoom> _parent;
     std::string _name;
     std::string _color;
     int _socket;