Create README.md (More info about purpose of this program/package)

[REmerald]

I'm not sure what this package/program does.

Currently, some seconds after I launch the game I get automatically signed in to my microsoft account.
But, the time it happens is random and/or my skin and some parts of the ui (marketplace, achievements, skin menu) won't load, so I have to restart the game (and sometimes launcher) for it to work.
I think that this package may help me, but

The name of the package/repo and short commend-description give almost no info about its purpose, what it does, how it's better than not having it, how it works, how to set it, etc. Of course, I have some clues, but I think a simple README.md would be much better for everyone. Plus I use chaotic-aur and I need this info to create a package request there.

[ChristopherHX]

Yes more uptodate information about this repo might be needed.

Only used for xbox login using Minecraft Versions <= 1.16.1X.

I think that this package may help me, but

No I don't think so.

I also assume this package stopped working during maintaining mcpelauncher-manifest or due to server side updates.

There is a known issue for this package listed in https://github.com/minecraft-linux/mcpelauncher-manifest?tab=readme-ov-file#important-minecraft-version-specific-bugs,