Custom Treesitter language injection queries

[rkusa]

Check for existing issues

• [X] Completed

Describe the feature

It would be great if it would be possible to add custom Treesitter language injection queries. This is for example possible in Helix and Neovim.

Example use-case would be to highlight the content of macros, e.g. of an sql! macro in Rust / or sql literal in TypeScript as SQL (assuming SQL language support):

If applicable, add mockups / screenshots to help present your vision of the feature

No response