Port C++ Examples to Python

[martinweismann]

https://github.com/3MFConsortium/lib3mf/tree/release/2.3.0-alpha/SDK/Examples/Cpp/Source

[vijaiaeroastro]

• [x] 3mf_convert
• [x] add_triangle
• [x] beam_lattice
• [x] color_cube
• [x] create_components
• [x] create_cube
• [x] extract_info