feat: add mojo language support

[mabasic]

Adds support for mojo programming language:
https://www.modular.com/mojo

Things that work:

• lsp
• grammar (tree-sitter)
• highlight queries
• textobject queries
• indent queries
• formatting

syntax highlighting does not work for some reason.

There are two tree sitter that I have found:

• https://github.com/realprogrammersusevim/tree-sitter-mojo (used)
• https://github.com/HerringtonDarkholme/tree-sitter-mojo

I don't know which one is better, but I have went with the one that has more recent commits.

I have noticed that there is a difference in languages.toml file between master and 23.05 version, so for 23.05 here is the config:

[[language]]
name = "mojo"
scope = "source.mojo"
roots = []
injection-regex = "mojo"
file-types = ["mojo", "🔥"]
comment-token = "#"
indent = { tab-width = 4, unit = "    " }
language-server = { command = "mojo-lsp-server" }

# Rembeber to add runtime/queries for mojo to ~/.config/helix/runtime/queries/mojo/

[[grammar]]
name = "mojo"
source = { git = "https://github.com/realprogrammersusevim/tree-sitter-mojo", rev = "f241530d0197c0ddfc0372c60be39221693f9196" }

# [[grammar]]
# name = "mojo"
# source = { git = "https://github.com/HerringtonDarkholme/tree-sitter-mojo", rev = "99fe918e69f087f910ef3b11eba31eb0d7e54edf" }

[the-mikedavis]

It looks like the scanner has some compilation errors on Windows