[GeoMechanicsApplication] Performance improvements in the GeoMechanicsApplication

[rfaasse]

As a user, I would like to run kratos-powered geomechanics computations as quickly as possible, such that I can use it for large models as well as large numbers of probabilistic calculations.

This user story aims to optimize the geomechanics application by removing redundant calls in workflows, reducing unnecessary allocations and testing multi-threaded calculations.

This overarching issue could act as a collection of performance improvement ideas, bundled in its sub-issues.