extend support for tree sitter to more languages

[pombredanne]

Some candidates:

• https://github.com/fwcd/tree-sitter-kotlin
• https://github.com/ganezdragon/tree-sitter-perl
• https://github.com/jiyee/tree-sitter-objc
• https://github.com/r-lib/tree-sitter-r
• https://github.com/tree-sitter/tree-sitter-c-sharp
• https://github.com/tree-sitter/tree-sitter-css
• https://github.com/tree-sitter/tree-sitter-haskell
• https://github.com/tree-sitter/tree-sitter-php
• https://github.com/tree-sitter/tree-sitter-ruby
• https://github.com/tree-sitter/tree-sitter-typescript