lateleite/cso2-launcher — reverse-engineered prompt

Build me a simple custom launcher for Counter Strike Online 2 in C++.

I want it to start the game client and let the player choose the master server IP and port before launching. It should also support command line options for language, master server address, master server port, using unpacked game files, and optionally passing a username and password so the login screen can be skipped when both are provided.

Please include an easy Windows startup script that asks for the master server IP, then runs the launcher with the right settings. It should be set up to build with CMake on Windows, ideally with Visual Studio 2017 support, and produce a launcher executable I can copy into the game Bin folder.

Add basic user friendly error messages, keep the code organized, and include a short README explaining firewall access, ports 27015 to 27020, how to build it, and how to run it. Look up current docs online if you need to.