[GeoMechanicsApplication] Create interface for the Tunnel model

[indigocoral]

Note: This issue should have been in the Deltares/FEA-Tools Repo... Sorry, my bad! :(

The branch that includes the TCL script for the tunnel model is: https://github.com/Deltares/FEA-Tools/tree/38-tcl-script-for-tunneling-model

Closed by:

• https://github.com/Deltares/FEA-Tools/issues/55
• https://github.com/KratosMultiphysics/Kratos/issues/12447
• https://github.com/Deltares/FEA-Tools/issues/54
• https://github.com/KratosMultiphysics/Kratos/issues/12431

[indigocoral]

The branch for creating the backbone material law with elastic reloading and unloading model for truss element: https://github.com/KratosMultiphysics/Kratos/tree/geo/truss_backbone_law

To Do:

• [ ] Interface generation should be described so that it's repeatable
• [ ] A similar law to the one for the truss element should be made for the interface element ( New insight: a backbone like model is not very suitable here, If a nonlinear model should be pursued a Coulomb like friction model may be more applicable ).
• [x ] They should be used in the tunnel model