Add PR template that informs the reader about formatKotlin

[MV-GH]

Basically title, add a template for pull requests that informs the reader that the reader shouldn't forget to do ./gradlew formatkotlin

[kuro-codes]

Better approach would be to have a pre-commit hook that executes it maybe?

[MV-GH]

I am not opposed to that either way it should be mentioned in CONTRIBUTING.md

[twizmwazin]

It needs to be documented either way. In my experience even if you have a pre-commit config most users won't use it.

[a1studmuffin]

I like the idea of setting up a basic CONTRIBUTING.md, just mentioning this and any other practices/conventions we want to adhere to along the way.

[kuro-codes]

Yes, a contributing doc would be nice

[a1studmuffin]

Other things that would be good to mention:

• when to bump the settings database version
• making changes to strings.xml files (to make localisation changes easier to manage)

[MV-GH]

It needs to be documented either way. In my experience even if you have a pre-commit config most users won't use it.

https://github.com/jeremymailen/kotlinter-gradle#git-hooks

it's possible to force add them on build