[TrilinosApplication] Improve TrilinosSpace, its python bindings and MPI test coverage

[loumalouomega]

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name: ✨ Feature
about: Improve TrilinosSpace, its python bindings and MPI test coverage

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📝 Description

This PR extends the TrilinosSpace interface with several missing utility operations, exposes the new functionality to Python, and adds comprehensive MPI C++ test coverage for the implemented behavior.

Key changes

• Added several TrilinosSpace utility methods and aliases to improve interface completeness and consistency with other Kratos spaces.
• Added support for utility operations such as communicator and map access, null checks, global assembly, vector copy creation, empty pointer creation with communicator, structure builders, diagonal queries, matrix/value helpers, and Matrix Market IO-related functionality.
• Exposed the new TrilinosSpace capabilities to Python in custom_python/add_trilinos_space_to_python.cpp, including:
  • matrix/vector Matrix Market write helpers
  • global assembly helpers
  • Set
  • TransposeMult
  • diagonal statistics queries
  • matrix value copy helper
  • IsDistributedSpace
• Added broad MPI C++ test coverage in tests/cpp_tests/test_trilinos_space.cpp for:
  • basic size, norm, dot, min/max and algebra operations
  • matrix-vector and matrix-matrix products
  • transpose products and BtDB / BDBt operations
  • pointer utilities and copy helpers
  • assembly helpers and structure builders
  • Matrix Market read/write
  • diagonal utilities
  • expected exception behavior for unsupported operations

Validation

• MPI C++ test suite executed successfully with:
  • mpiexec -np 2 --allow-run-as-root --oversubscribe /home/vicente/src/Kratos/bin/Release/test/KratosTrilinosCoreTest
• The new tests in test_trilinos_space.cpp exercise the added and refined TrilinosSpace functionality against distributed execution.

🆕 Changelog

• Improved TrilinosSpace interface completeness with additional utility methods and helpers
• Exposed new TrilinosSpace operations to Python
• Added extensive MPI C++ tests for TrilinosSpace