feat: add current indentation level textobject

[WieeRd]

How about providing the indentation level textobject ai and ii?
I think it will work really well with this plugin as the visual highlight of the current scope makes it easier to predict the to-be-affect area of those textobjects.

[savchenko]

Sounds wildly out of scope, there is https://github.com/kiyoon/treesitter-indent-object.nvim and the likes.

[WieeRd]

That is exactly what I ended up with last week and would definitely recommend.