Add CDB to PyMechanical example

[greschd]

Add an example which loads the CDB file and ACPCompositeDefinitions.h5 into PyMechanical (after running PyACP), and then runs the analysis inside PyMechanical. PyDPF Composites is used for post-processing.

Closes #702.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.85%. Comparing base (4d20b6d) to head (4d60c30).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #705      +/-   ##
==========================================
- Coverage   95.04%   94.85%   -0.20%     
==========================================
  Files         109      109              
  Lines        5710     5710              
  Branches      323      323              
==========================================
- Hits         5427     5416      -11     
- Misses        282      293      +11     
  Partials        1        1              

Flag	Coverage Δ
direct-launch	91.64% <100.00%> (ø)
minimum-deps	?
python-3.10	?
python-3.11	?
python-3.12	94.23% <100.00%> (-0.20%)	⬇️
server-2024R2	?
server-2025R1	94.23% <100.00%> (ø)
server-2025R2	94.23% <100.00%> (ø)
server-latest	94.85% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.