Add subcell limiting support for P4estMesh

[bennibolm]

This PR includes:

• Adding P4estMesh elixir "elixir_euler_supersonic_cylinder_sc_subcell.jl" and "elixir_euler_sedov_blast_wave_sc_subcell.jl"
• Add calc_bounds_twosided_interface and calc_bounds_onesided_interface for P4estMesh
• Update parameters of get_boundary_outer_state to allow normal directions, inner values (for slip wall), ...
• Remnant of last PR: Move routine save_bounds_check_errors from subcell_bounds_check_2d.jl to subcell_bounds_check.jl

TODO:

• [x] Code coverage for two-sided bounds calculations for conservative variables.
• [x] Does it make sense to add additional elixir (e.g. sedov blast) and test calc_bounds_twosided_boundary for Periodic boundaries.

No support for non-conservative terms implemented yet.

Example: Supersonic cylinder Local two-sided limiting of density, positivity of pressure and local onesided limiting of entropy (guermond et al) No AMR. Initial refinement level for given mesh of 3 -> 35904 elements; polynomial degree of 3

[github-actions[bot]]

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Created with :heart: by the Trixi.jl community.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 99.55556% with 1 line in your changes missing coverage. Please review.

Project coverage is 96.18%. Comparing base (75d8c67) to head (eadcf6f).

Files	Patch %	Lines
src/callbacks_stage/subcell_bounds_check.jl	96.55%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1954 +/- ## ========================================== + Coverage 96.16% 96.18% +0.02% ========================================== Files 460 463 +3 Lines 36957 37138 +181 ========================================== + Hits 35537 35718 +181 Misses 1420 1420 ``` | [Flag](https://app.codecov.io/gh/trixi-framework/Trixi.jl/pull/1954/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=trixi-framework) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/trixi-framework/Trixi.jl/pull/1954/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=trixi-framework) | `96.18% <99.56%> (+0.02%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=trixi-framework#carryforward-flags-in-the-pull-request-comment) to find out more.

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