version ansys/nexus folder

[mariostieriansys]

As a requirement to support multiple versions of EnSight/PyEnSight on AnsysLab/OnScale Notebook we have the need to version the ansys/nexus folder in the nexus### distribution.

This PR reflects the changes needed in PyEnSight once the EnSight change is merged.

A fallback is provided if the version of EnSight being used is < 242

[codecov-commenter]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (5b199d6) 75.25% compared to head (53bc0f5) 75.28%.

Files	Patch %	Lines
src/ansys/pyensight/core/renderable.py	78.57%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #344      +/-   ##
==========================================
+ Coverage   75.25%   75.28%   +0.03%     
==========================================
  Files          18       18              
  Lines        2849     2857       +8     
  Branches      517      518       +1     
==========================================
+ Hits         2144     2151       +7     
- Misses        543      544       +1     
  Partials      162      162              

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[randallfrank]

@mariostieriansys I'll let you decide on the order with which to commit these :).