feat(tests): renovate testing infrastructure

[clason]

• fix(julia): adapt queries to parser changes
• fix(shared): ensure tree is parsed
• feat(tests): port test infrastructure
• chore: reformat with new stylua settings
• chore: remove obsolete scripts
• docs(readme): regenerate
• fix(queries): fix lint
• ci: migrate to nvim-treesitter
• fix(lua): fix luals warnings

[clason]

Test failures are the same as on master and related to using Nvim 0.11 as the runner.