Add Odin support

[Igonato]

Adding Odin support (#182). Currently there are false positives with CONSTANTS in enum variant values and bit_fields size:

Can use another pair of eyes, I might be missing a way to make a query that can handle this case. It is also possible that's the grammar needs changing. Grammar for reference: https://github.com/tree-sitter-grammars/tree-sitter-odin/blob/master/grammar.js

What do you think?

[blopker]

This looks great so far, but oof, I have no idea how to read Odin. There's also no Odin support in my tree-sitter visualizer, so debugging this will take some time. I'd be happy to merge this as is though if you want it in now?

[Igonato]

Hey, I'd like to spend more time on it, just got distracted with the holidays (Happy New Year btw 🎉). I'm reading up on Tree-sitter, I wanted to learn how to make a parser anyway, then I'll know for sure if it's limited by the grammar or just needs a better query.

[blopker]

Happy new year! Sounds good. I find that adding tests helps with the iteration speed a lot. Happy to answer any questions, but I have no experience with Odin specifically 🙂

[Igonato]

Oh, I had some tests already, just didn't include them in the PR. They immediately flagged the duplication and I figured better do a proper fix instead of figuring how to suppress those and submitting a partial solution.

Odin is quite simple, no-nonsense, boring in a good way and the community is awesome! If you find a spare hour, I would encourage you to look up some interviews with the creator of Odin @gingerBill and give the language a try. I found that it simplicity brought back joy to my programming life, serving as a nice break from the Web and Rust stuff.