OpenMPI + CUDA Compatiblity

[JuanPedroGHM]

Introduces an incompatibility list for different communication backends, in order to safely enable GPU compatible MPI communication.

Changes

• Incompatibility list in configuration file.
• Incompatibility check in _moveToCompDevice

Does this affect performance

• Some operations (Bcast and Allgatherv in resplit_(None)) have shown massive slowdowns when running the tests. We might want to add certain functions to the incompatibility list for performance reasons.

[codecov]

Codecov Report

❌ Patch coverage is 78.72340% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.67%. Comparing base (86eb546) to head (f7a75f8).
⚠️ Report is 13 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
heat/core/_config.py	61.53%	5 Missing ⚠️
heat/core/communication.py	85.29%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2279      +/-   ##
==========================================
- Coverage   91.71%   91.67%   -0.04%     
==========================================
  Files          87       87              
  Lines       14284    14310      +26     
==========================================
+ Hits        13100    13119      +19     
- Misses       1184     1191       +7     

Flag	Coverage Δ
unit	91.67% <78.72%> (-0.04%)	⬇️

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