Add examples to documentation (2/11)

[42sol-eu]

Add examples to documentation (2/11)

To avoid double work - leave a small comment in this issue to claim it for you.

for checklist see ./examples/README.md
also check the documentation snippets in ./docs/examples_1.rst

NOTE: Image files are placed in ./docs/assets/examples/
NOTE: Setup of the sphinx tool is descibed in CONTRIBUTING.md

• build123d_logo.py and build123d_logo_algebra.py
• canadian_flag.py and canadian_flag_algebra.py
• circuit_board.py and circuit_board_algebra.py

[42sol-eu]

I will do these examples!

[42sol-eu]

docs updated with #504

[42sol-eu]

There was one error in the build123d_logo_algebra.py the Rot(z= was lower-case.

Now in line 41:

    extension_lines += (Pos(*(l2 @ 0.5)) * Rot(Z=180)) * arrow_left