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.

CMakeLists.txt

@@ -5,6 +5,5 @@ project(YourChat VERSION 0.1)
 set(CMAKE_CXX_STANDARD 23)
 set(CMAKE_CXX_STANDARD_REQUIRED True)
 include_directories(${PROJECT_SOURCE_DIR})
-	add_executable(yourchat main.cpp base.cpp config.cpp server.cpp room.cpp tools.cpp chat_user.cpp database.cpp)
-	# Removed chatroom.cpp, chatuser.cpp, chatroom.h, chatuser.h from the build
+	add_executable(yourchat main.cpp base.cpp config.cpp server.cpp chat_room.cpp tools.cpp chat_user.cpp database.cpp)
 	target_link_libraries(yourchat jsoncpp pthread pqxx)