Indentation support

[tomaskallup]

I've been playing a bit with indentation queries for neovim, I've landed on this so far:

[
  (compound_stmt)
  (while_stmt)
  (if_stmt)
  (enum_body)
  (expr_block)
  (initializer_list)
] @indent.begin

[
  ")"
  "}"
] @indent.branch

[
  (block_comment)
  (doc_comment)
] @indent.auto

And it seems to work fine, posting this here mainly for people to find/try/give feedback, I'll PR it after some time of usage, if it doesn't break too much.