Refactor luaparser #12
Description
When I was writing it, I was new to lua, did not use any static checkers such as lua-language-server and in consequence there are a few poor design choices there. I would like to refactor it, get rid of all warnings, add assertions, ensure type safety with ---@type <type> hints and review that the code base there is understandable (it's been long enough that I should be able to judge myself in terms of that).
Not super high-prio. Definitely don't want to delay 2.2.0 because of this.