wrong location in panic message

[haraldmaida]

When an assertion fails and panics, the panic message in the terminal does not contain the location of the assertion itself but internal location where the panic occurs.

This pull request fixes this issue. Additionally it adds the ability to verify the panic location in plain unit tests.

[codecov]

Codecov Report

❌ Patch coverage is 88.49558% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 87.78%. Comparing base (5423488) to head (484ff86).

Files with missing lines	Patch %	Lines
src/panic_assertion/mod.rs	90.00%	7 Missing and 2 partials ⚠️
src/panic/mod.rs	71.42%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #98      +/-   ##
==========================================
- Coverage   87.84%   87.78%   -0.07%     
==========================================
  Files          42       43       +1     
  Lines        7513     7531      +18     
  Branches     7513     7531      +18     
==========================================
+ Hits         6600     6611      +11     
- Misses        843      850       +7     
  Partials       70       70              

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