Moved add-hook calls (for tree-sitter initialization) into their
respective modes' config blocks, or nearby, to be consistent with how
other, similar tools (like lsp!) are initialized, and does so at
runtime, rather than at expansion/compile time, which eval-when! caused.
BREAKING CHANGE: break the global nature of the tree sitter
module by adding a +tree-sitter flag to every applicable module
In the background this hooks turn-on-tree-sitter-mode
to the major-mode-hook of the language.
This may also solve the eager loading of tree sitter
