ci: enhance CI testing by summarizing tests durations

[germa89]

As the title.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.33%. Comparing base (4c6e65a) to head (810ecf1).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3754      +/-   ##
==========================================
+ Coverage   88.30%   88.33%   +0.03%     
==========================================
  Files         187      187              
  Lines       14704    14704              
==========================================
+ Hits        12984    12989       +5     
+ Misses       1720     1715       -5     

[germa89]

Close #3752

[germa89]

Future work: Consider using tabulate (to avoid creating the tables ourselves), and/or click-extras (for more facilities).

[germa89]

Output summary:

https://github.com/ansys/pymapdl/actions/runs/13454381188/attempts/1#summary-37596369652

[germa89]

I do not think pytest-durations is needed for this.