[build] Add python_library for jinja2

Change-Id: Ie4cbbe7d8dab8517e743d34cdd6cd68ceb95f90c
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/jinja2/+/511339
Reviewed-by: Shai Barack <shayba@google.com>
2 files changed