[Future] - Expose future solver and scheme functionality to Python

[T-Siemer]

📝 Description

Expose additional future linear-solver and implicit-scheme functionality through the Python interface. These bindings are needed for the multiple-loadcase analysis workflow.

Key changes

• Exposed the following LinearSolver methods to Python:
  • InitializeSolutionStep
  • PerformSolutionStep
  • FinalizeSolutionStep
  • Clear
• Exposed the three ImplicitScheme.Build overloads to Python
• Exposed ImplicitScheme.BuildMassMatrix to Python

Validation

• Compiled the Kratos target successfully in Release mode.
• Instantiated a LinearSystem and SkylineLUFactorizationSolver from Python.
• Successfully called Initialize, InitializeSolutionStep, FinalizeSolutionStep, and Clear.
• Verified that the newly exposed ImplicitScheme methods are available from Python.

🆕 Changelog

• Exposed future linear-solver lifecycle methods to Python.
• Exposed future implicit-scheme build methods to Python.