Add DXF file format for load_geometry

[LasNikas]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 1.92308% with 51 lines in your changes missing coverage. Please review.

Project coverage is 70.12%. Comparing base (4a74c9a) to head (a83740b).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/preprocessing/geometries/io.jl	1.92%	51 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #821      +/-   ##
==========================================
- Coverage   70.63%   70.12%   -0.52%     
==========================================
  Files         106      106              
  Lines        6771     6822      +51     
==========================================
+ Hits         4783     4784       +1     
- Misses       1988     2038      +50     

Flag	Coverage Δ
unit	70.12% <1.92%> (-0.52%)	⬇️

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[efaulhaber]

Needs tests, but I will add a docs page explaining how to convert SVG to DXF with Python, which will include doctests, so we can skip tests here for now.

[LasNikas]

/run-gpu-tests