We have plans for adding a keyboard interface [0] at least, though it's still an open discussion. If you're after straight Neovim support though, perhaps nvim-treesitter-textobjects [1] might tickle your fancy?

[0]: https://github.com/cursorless-dev/cursorless/issues/710

[1]: https://github.com/nvim-treesitter/nvim-treesitter-textobjec...