chore: add uvx+pypi/uvx+git installation method choices to problem issue template

[sisp]

I've added uvx-based installation method choices to the problem issue template, as uv has gained massive popularity. Thanks, @henryiii, for pointing this out! 🙇

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.01%. Comparing base (bad970e) to head (2fca684).
⚠️ Report is 95 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2120   +/-   ##
=======================================
  Coverage   98.01%   98.01%           
=======================================
  Files          55       55           
  Lines        5949     5949           
=======================================
  Hits         5831     5831           
  Misses        118      118           

Flag	Coverage Δ
unittests	98.01% <ø> (ø)

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