Rename Tree-sitter major modes from "ts" to "treesit" (was Re: tree-sitter version?)

[Daniel Martín]

"T.V Raman" <raman@google.com> writes:

> also the   name "ts" as part of tree-sitter is an unfortunate
> confusion since ts-mode is for typescript.
>
> I initally wrongly assumed that ts-mode was some kind of global mode
> that would enable tree-support for all supported modes, given the
> names c-ts-mode etc.

This is a good point.  The Tree-sitter Elisp library itself and its
commands already use the "treesit" abbreviation consistently.  We're
still on time to rename the new language modes to c-treesit-mode, and so
on.  Thoughts?