feat: add more luv methods and types

[lewis6991]

No description provided.

[folke]

Sweet, thanks!

[folke]

Merged it already, but I just remembered why I had functions there instead of @field. It's because sumneko doesn't create a function snippet for a field, even though it's a function, so completion won't add the () when selecting it. \

Not a big deal tbh, but just so you know...

[lewis6991]

Ah ok, thanks. I did wonder since the file had two different styles. I just chose one.

[folke]

LuaLS/lua-language-server#1573

[folke]

wrong issue. nevermind :)

Might actually have been fixed in sumneko already, need to doublecheck