neovim: add tree-sitter-cli dependency

[davisjc]

The tree-sitter-cli package is required to compile tree-sitter parsers and is now listed as a dependency of the popular nvim-treesitter plugin.

Without tree-sitter-cli installed, the nvim-treesitter plugin will emit a message on every start as it tries and fails to compile the language parsers requested by the user. Do the simple thing and add a dependency to the neovim package to provide the user with a sane environment for using tree-sitter.

• Have you followed the guidelines for contributing?
• Have you ensured that your commits follow the commit style guide?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• Does your build pass brew audit --strict <formula> (after doing HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>)? If this is a new formula, does it pass brew audit --new <formula>?

---

[botantony]

I 👎 this idea. tree-sitter-cli is not used by neovim directly. nvim-treesitter is a popular thing for sure, but at the end of the day it is a third-party plugin and neovim can function without it perfectly fine. A user who has troubles with a plugin not functioning properly without a certain package should refer to the documentation for the requirements, it usually lists what additional tools are needed, just like in this case: https://github.com/nvim-treesitter/nvim-treesitter/tree/main?tab=readme-ov-file#requirements