A few changes to make TSQ highlights better: * A parsing error has been fixed in the grammar itself * Previously tree-sitter-tsq did not parse the variables in predicates like `(#set! injection.language "javascript")` * Theme nodes as `tag` * The newly added node to the parser (from the above fix) is `variable` which takes over the `variable` capture from nodes * Highlight known predicates as `function` and unsupported predicates as `error` * This may help when translating queries from nvim-treesitter. For example `#any-of?` is a common one used in nvim-treesitter queries but not implemented in Helix or tree-sitter-cli. * Inject tree-sitter-regex into `#match?` predicates