Bass grammar for Tree-sitter.

Prerequisites: go and make

make

This will generate the following files:

• queries/highlights.scm — a set of highlight queries suitable for tree-sitter test
• queries/vim/highlights.scm — suitable for Neovim highlighting
• queries/helix/highlights.scm — suitable for Helix highlighting

tree-sitter test, Helix, and Neovim disagree on the precedence for overlapping queries.

With tree-sitter test and Helix, the first matching query takes precedence, whereas in Neovim the last matching query supersedes the ones before it.

To handle this the query template just conditionally switches the order of the queries.