Add support for kotlin (kt) and java (java)

[daedroza]

Hello, the plugin looks cool and very useful. Would it be possible to add support for kt and java file types?

I can do the testing part if needed, thanks for your work!

[AckslD]

Hi @daedroza! It should be easy to add the container types in kotlin and java. I don't use these languages often so don't know what they should be but feel free to submit a PR with two new entries here: https://github.com/AckslD/nvim-trevJ.lua/blob/4886577f60cd8fa96cdcf719a663a61ece31de01/lua/trevj.lua#L67