Rename 'tlsph' to 'place_on_shell'

[svchb]

Fixes #782

[svchb]

Other options would be for example: 'place_on_skin' 'place_on_perimeter' 'place_on_face'

[LasNikas]

place_on_interface ?

[svchb]

I would like to avoid words that can be used in another context within our setups. Interface could be also the interface between two fluids or phases.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 80.76923% with 5 lines in your changes missing coverage. Please review.

Project coverage is 70.12%. Comparing base (a91211d) to head (59444e2). Report is 1 commits behind head on dev.

Files with missing lines	Patch %	Lines
src/setups/extrude_geometry.jl	73.33%	4 Missing :warning:
src/preprocessing/particle_packing/system.jl	75.00%	1 Missing :warning:

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #814   +/-   ##
=======================================
  Coverage   70.12%   70.12%           
=======================================
  Files         106      106           
  Lines        6822     6822           
=======================================
  Hits         4784     4784           
  Misses       2038     2038           

Flag	Coverage Δ
unit	70.12% <80.76%> (ø)

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[LasNikas]

/run-gpu-tests

[efaulhaber]

Let's merge all breaking changes to dev while we continue with non-breaking changes on main.