chore: use form based issue templates

[roeap]

Description

To help our users and us to gather some more structured context about issues and features requests, this PR switches us to the more modern form based issue templates. This also allows us to handle some metadata (e.g. issue type) in a consistent manner.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.76%. Comparing base (dfe4cfc) to head (dd63a44).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3865      +/-   ##
==========================================
- Coverage   73.77%   73.76%   -0.02%     
==========================================
  Files         152      152              
  Lines       39138    39116      -22     
  Branches    39138    39116      -22     
==========================================
- Hits        28876    28853      -23     
- Misses       8987     8989       +2     
+ Partials     1275     1274       -1     

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