Improve issue and PR templates

[torn4dom4n]

What does this PR do?

Improve repo

For resources

Description

I added issue templates and changed a few things in PR template.

Why is this valuable (or not)?

This will close https://github.com/EbookFoundation/free-programming-books/issues/7581

Checklist

• [x] Read our contributing guidelines.
• [x] Used an informative name for this pull request.

Follow-up

• Check the status of GitHub Actions and resolve any reported warnings!

@davorpa, could you review this PR?

[davorpa]

Could you prepare one more for label discussions?

[torn4dom4n]

Could you prepare one more for label discussions?

Yes. But before I do that, why we don't use GitHub discussions if someone wants to talk about this repo?

[davorpa]

Could you prepare one more for label discussions?

Yes. But before I do that, why we don't use GitHub discussions if someone want to talk about this repo?

@eshellman

[eshellman]

This is an interesting idea, but not something I want to be playing with during october - we are doing almost 100 reviews per day!

[torn4dom4n]

Yeah, we can discuss this as soon as possible.