[GHTemplates] Use new preview of Issue templates

[MyDrift-user]

Description

Github improved the Issue Templates a lot last month, we can now use yaml (For the config only yml rn, idk why..). I reworked the templates a bit, mentioned the Community Discord for general questions (+ Discussions tab ofc) and removed blank issues.

Choose your Issue Template:

New Issue Template

Example Issue:

New Feature Request Template

Example Issue:

Checklist

• [x] My code adheres to the coding and style guidelines of the project.
• [x] I have performed a self-review of my own code.
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] I have made corresponding changes to the documentation.
• [x] My changes generate no errors/warnings/merge conflicts.