Add new hook pytask_unconfigure, return borrowed pdb.set_trace at the end of session, reenable tests for PytaskPDB.

[tobiasraabe]

Changes

Provide a description and/or bullet points to describe the changes in this PR.

Todo

• Reference issues which can be closed due to this PR with "Closes #x".
• Review whether the documentation needs to be updated.
• Document PR in docs/changes.rst.

[codecov]

Codecov Report

Merging #107 (4372849) into main (650334d) will increase coverage by 3.18%.
The diff coverage is 95.23%.

❗ Current head 4372849 differs from pull request most recent head 9cd9f96. Consider uploading reports for the commit 9cd9f96 to get more accurate results

@@            Coverage Diff             @@
##             main     #107      +/-   ##
==========================================
+ Coverage   90.12%   93.30%   +3.18%     
==========================================
  Files          62       62              
  Lines        5243     5260      +17     
==========================================
+ Hits         4725     4908     +183     
+ Misses        518      352     -166     

Flag	Coverage Δ
end_to_end	79.96% <95.23%> (+3.23%)	⬆️
integration	41.67% <39.68%> (+0.05%)	⬆️
unit	67.22% <60.31%> (+0.01%)	⬆️

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Impacted Files	Coverage Δ
src/_pytask/debugging.py	31.94% <60.00%> (+1.52%)	⬆️
src/_pytask/capture.py	85.04% <93.33%> (ø)
src/_pytask/build.py	94.00% <100.00%> (+0.12%)	⬆️
src/_pytask/hookspecs.py	100.00% <100.00%> (ø)
tests/test_debugging.py	99.24% <100.00%> (+65.10%)	⬆️

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