consider adding API to allow drop-in replacement for existing python gpg projects

[redshiftzero]

There are multiple Python projects for using pgp (these both wrap the gpg binary):

• https://github.com/isislovecruft/python-gnupg (on PyPI as https://pypi.org/project/pretty-bad-protocol/)
• https://docs.red-dove.com/python-gnupg (on PyPI as https://pypi.org/project/python-gnupg/)

For those folks that must use the PGP ecosystem, it might be worth adding an API here similar to existing popular Python gpg projects which would enable the use of this project as a drop-in replacement.