Add luadoc queries

[Danielkonge]

The luadoc parser has a few problems with things it captures weirdly (or doesn't really capture), but we can get good highlighting for most type annotations in Lua with this.

Note: If you commit this before the update with types, then I can add luadoc there. Otherwise, if you commit the types update first, I can rebase this pull request and add the types here.

[HiPhish]

Merged. What does this pattern mean?

(_
  "[" @delimiter
  .
  field: (_)
  .
  "]" @delimiter @sentinel
) @container

In this text does [integer]: integer mean a table where there is any number of integer keys that map to integer values?

---@type { key1: { key2: { [string]: table<number, number | integer> }, [integer]: integer } }

[Danielkonge]

Merged. What does this pattern mean?

(_
  "[" @delimiter
  .
  field: (_)
  .
  "]" @delimiter @sentinel
) @container

The dots just indicate that the elements should show up as immediate neighbors, and the reason I use _ twice is that there are multiple cases, where you write something like [integer] or [<any_type>] really. Instead of writing out the different cases, this should capture all of them. (I don't think the dots are actually needed, but I included them to be sure I catch only the things I wanted.)

In this text does [integer]: integer mean a table where there is any number of integer keys that map to integer values?

---@type { key1: { key2: { [string]: table<number, number | integer> }, [integer]: integer } }

Yes, that is my understanding of the types, e.g. a Lua table like this { 1 = 1, 2 = 2, 3 = 3 } can be described by the type annotation { [integer]: integer }. Otherwise, without the square brackets, you are meant to write keys before the colon in the type annotations, so { integer: integer } would mean you are using the key integer in the Lua table, e.g. { integer = 1 }.