This function computes the latest compatible grammar version for
each major mode.
* admin/treesit-admin.el (treesit-admin-file-name): Move.
(treesit-admin--compat-template-file-name): New variable.
(treesit-admin--mode-languages): New function.
(treesit-admin--find-latest-compatible-revision): Return a plist
instead.
(treesit-admin--last-compatible-grammar-for-modes): New function.
This function can find the last grammar revision that is
compatible with a major mode.
* admin/treesit-admin.el (treesit-admin-file-name): New
variable.
(treesit-admin--validate-mode-lang):
(treesit-admin--find-latest-compatible-revision): New functions.
Make treesit-admin--verify-major-mode-queries use
treesit--install-language-grammar-1, rathre than the interactive
command treesit-install-language-grammar.
* admin/treesit-admin.el:
(treesit-admin--verify-major-mode-queries): Add parameter
SOURCE-ALIST. Use treesit--install-language-grammar-1.
(treesit-admin-verify-major-mode-queries): Pass
treesit-admin--builtin-language-sources to
treesit-admin--verify-major-mode-queries.
* lisp/treesit.el (treesit-install-language-grammar): Don't
return revision of the git repo.
