Squirrel language support

[FlutterTal]

Check for existing issues

• [x] Completed

Language

Squirrel

Tree Sitter parser link

https://github.com/tree-sitter-grammars/tree-sitter-squirrel

Language server link

https://github.com/Treescrub/squirrel-language-server

Misc notes

I tried to do it myself, but I got to realize I might need some help for it