Support .config.luau files #320
Description
Luau lsp recently introduced .config.luau files support. The RFC for this can be found here: https://rfcs.luau.org/config-luauconfig.html
Note that the status in the RFC is not updated. In the recent released of Luau Lsp, the .config.luau file is supported, as found here: https://github.com/JohnnyMorganz/luau-lsp/releases/tag/1.56.0
This file pretty much behaves exactly like .luaurc files, except it uses Luau instead of a json file. Darklua should be able to refer to aliases defined in this file if a .luaurc file doesn't exist.