pw_graphics: Add Python package

Change-Id: I8e9dddb3f0731448a0cecec01baf5727de5b2a92
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/95846
Reviewed-by: Erik Gilling <konkers@google.com>
Commit-Queue: Anthony DiGirolamo <tonymd@google.com>
12 files changed