add test for workchain

[superstar54]

This PR adds tests for the QeAppWorkChain, and also includes the plugins: bands and pdos.

The test generates the projection data and bands data, then mounts them to the QeAppWorkChain. The final result is then checked.

[codecov]

Codecov Report

Patch coverage: 95.94% and project coverage change: +6.42% 🎉

Comparison is base (06bcc9d) 64.03% compared to head (b3b2521) 70.45%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #472      +/-   ##
==========================================
+ Coverage   64.03%   70.45%   +6.42%     
==========================================
  Files          40       42       +2     
  Lines        2736     2955     +219     
==========================================
+ Hits         1752     2082     +330     
+ Misses        984      873     -111     

Flag	Coverage Δ
python-3.10	70.45% <95.94%> (+6.42%)	⬆️
python-3.8	70.50% <95.94%> (+6.42%)	⬆️
python-3.9	70.50% <95.94%> (+6.42%)	⬆️

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Files Changed	Coverage Δ
tests/conftest.py	95.12% <95.13%> (+2.27%)	⬆️
src/aiidalab_qe/app/structure/__init__.py	88.15% <100.00%> (+35.45%)	⬆️
tests/test_plugins_bands.py	100.00% <100.00%> (ø)
tests/test_plugins_pdos.py	100.00% <100.00%> (ø)

... and 9 files with indirect coverage changes

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[unkcpz]

@superstar54 thanks a lot! These are very useful tests. I only have minor requests good to me overall.

[unkcpz]

Thanks for the work! @superstar54
The chrome test failed with an error, I retrigger it and let's see if it is because of timeout.

[unkcpz]

🥂