There are node changes on lua and/or vim parsers, which cause highlight
errors with current version of nvim-treesitter in nixpkgs.
This update should fix them.
Update the grammars and add `allGrammars` derivation.
`nix-build "<nixpkgs>" -A tree-sitter.allGrammars` will create a
derivation with symlinks to all the grammars
Includes some bugfixes/cleanups to the scripts and packaging, a run of the
updater, a bump of the version, an upgrade to the newer cargo fetcher in #79975,
and gets the web assembly portion to compile successfully.
Fixes#75863
