Add .gitattributes to convert crlf to lf

[xicri]

From https://github.com/xicri/genshin-langdata/issues/189#issuecomment-2360918462

Also, if "git config core.autocrlf" is set to true, you will need to remove the following line from .editorconfig.

end_of_line = lf

I will try to solve this issue by adding .gitattributes with * text=auto eol=lf.