Do not use CRS operations before initializing QgsApplication

[Joonalai]

Fixes #56 by not using any QgsCoordinateReferenceSystem before initialiszing QgsApplication.

[Joonalai]

@LKajan could you review this and maybe make another release afterwards?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 57.25%. Comparing base (d5227a4) to head (369b7dc).

Files	Patch %	Lines
src/pytest_qgis/utils.py	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #60      +/-   ##
==========================================
- Coverage   57.66%   57.25%   -0.41%     
==========================================
  Files           7        7              
  Lines         496      496              
==========================================
- Hits          286      284       -2     
- Misses        210      212       +2     

Flag	Coverage Δ
pytest	57.25% <0.00%> (-0.41%)	⬇️

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[LKajan]

Thanks for this PR!
I'm a bit busy right now, but I'll check this out in the next couple of days. I'll make a release then.

[LKajan]

Thanks for the PR! This indeed is a weird case.