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.cpp

@@ -6,7 +6,7 @@
 #include <unistd.h>
 #include <sys/socket.h>
 #include <sys/types.h>
-#include "room.h"
+#include "chat_room.h"
 #include <iostream>
 #include <netinet/in.h>
 #include <netinet/tcp.h>
@@ -15,7 +15,7 @@
 namespace Yc {
 namespace Lib {
 
-ChatUser::ChatUser(std::shared_ptr<Room> parent, std::string name, std::string color, int socket) :
+ChatUser::ChatUser(std::shared_ptr<ChatRoom> parent, std::string name, std::string color, int socket) :
 		_parent(std::move(parent)),
 		_name(std::move(name)),
 		_color(std::move(color)),
@@ -96,7 +96,7 @@ std::string ChatUser::color() const {
 	return _color;
 }
 
-void ChatUser::setParent(std::shared_ptr<Room> parent) {
+void ChatUser::setParent(std::shared_ptr<ChatRoom> parent) {
 	_parent = std::move(parent);
 }