Refactor treesitter.fnl to remove aniseed nvim module

[saccarosium]

Hi,
this PR refactors treesitter.fnl to use neovim builtin api instead of using aniseed nvim module.

[Olical]

Nice, I've also just swapped the implementation for starts-with and ends-with out so they just call the built in vim function now. Tests still pass which is reassuring! I was worried about how they would handle nil etc. If the vim.* ones do NOT handle nil well, they might error in unexpected ways. the conjure.text functions do handle nils which is more Clojure-y and how I like to keep the APIs ideally.

[Olical]

Oh, actually now the HUD isn't appearing when I open a file 😬 investigating

[saccarosium]

I was worried about how they would handle nil etc. If the vim.* ones do NOT handle nil well, they might error in unexpected ways. the conjure.text functions do handle nils which is more Clojure-y and how I like to keep the APIs ideally.

Oh makes sense. By testing the vim.* ones do not handle nils and they throw an exeption. So it might be a better idea to use just use text for that.

Sorry if I didn't check it properly it wasn't an edgecase I was thinking about.

[Olical]

Oh no it's okay, I've rolled back commits and I still see the issue. So it seems unrelated... but also new? 🤔

[Olical]

Seems like CursorMoved is firing when I open a fresh buffer which triggers log.close-hud-passive early. This never used to be the case so I suspect the behaviour changed between Neovim versions.

[Olical]

#641 tracking here