[Feature] Add Vim/Neovim-compatible dictionaries

[alexmozaidze]

Currently, the dictionary files are extremely messy, and the spellchecker for Vim/Neovim is whiny about the correctness and duplicate elements. Here's the steps I had to take in order to make the dictionary work:

1. Download dictionaries/ka_GE.{aff, dic}
2. Remove all the comments in both of them with :g/^\s*#/d
3. Remove all the MAP entries in .aff with :g/^MAP /d or Dedup the characters, the spellchecker can't handle complex things
4. Remove all single characters in .dic with :g/^[ა-ჰ]$/d
5. :mkspell ka ka_GE
6. Move the generated ka.utf-8.spl to ~/.local/share/nvim/site/spell/
7. Set the language vim.opt.spelllang = { "en", "ka" }

And I still see minor issues. For instance, when making an error in the word and typing out გავაკეთ, the spell suggestions show გავაკეთო�, which is a correct word, I grant you, but there is an invalid garbage character attached to the end of it, for some reason.

I wasn't able to build the repo myself. It would error out saying there was an unsorted file or something. But that's a different issue entirely.