Automatic ordering of clamped particles

[LasNikas]

With this PR, we now have two ways to specify clamped particles:

1. Manual ordering: Provide the number of clamped particles via n_clamped_particles,
   ensuring that these particles are the last entries in the InitialCondition
2. Automatic ordering: Pass the indices of the particles to be clamped via clamped_particles.
   In this case, the specified particles will be internally reordered so that they become
   the last particles in the InitialCondition.

The second option can be helpful in more complex setups, for example, to avoid unions.

Here a snippet from the oscillating_beam_2d.jl example

structure_system = TotalLagrangianSPHSystem(structure, smoothing_kernel, smoothing_length,
                                            material.E, material.nu,
                                            # n_clamped_particles=nparticles(clamped_particles),
                                            clamped_particles=collect((nparticles(beam) + 1):nparticles(structure)),
                                            acceleration=(0.0, -gravity),
                                            penalty_force=nothing, viscosity=nothing)

[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.89%. Comparing base (c1db9a3) to head (1c71c74).

Files with missing lines	Patch %	Lines
...c/schemes/structure/total_lagrangian_sph/system.jl	20.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #931      +/-   ##
==========================================
+ Coverage   63.87%   63.89%   +0.02%     
==========================================
  Files         117      117              
  Lines        7842     7858      +16     
==========================================
+ Hits         5009     5021      +12     
- Misses       2833     2837       +4     

Flag	Coverage Δ
unit	63.89% <75.00%> (+0.02%)	⬆️

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[svchb]

A test is missing.

If you remove the first option it is a breaking change.

[LasNikas]

/run-gpu-tests

[LasNikas]

/run-gpu-tests