Add prelimary support for RowColumn elimination when using CSR format

[grospelliergilles]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 98.52941% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 69.00%. Comparing base (557c8c2) to head (a7673f5).
⚠️ Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
femutils/CsrDoFLinearSystemImpl.cc	98.27%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #309      +/-   ##
==========================================
+ Coverage   68.84%   69.00%   +0.15%     
==========================================
  Files         112      112              
  Lines       14206    14265      +59     
  Branches     1932     1944      +12     
==========================================
+ Hits         9780     9843      +63     
+ Misses       3964     3959       -5     
- Partials      462      463       +1     

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