Attempt a rewrite of GoogleCL

[vinitkumar]

This project has been broken for quite some time now. But it has an active group of users, and it makes sense for it to be revived again.

Since we will rewrite it from scratch, we do not have the burden of legacy and can be written in a clear core.

Following are the core design goals:

• Support Python(3.7, 3.8 (live now)) by default and use the newer enhancements to the language for the advantage.
• Use type-hints to minimize errors.
• Use black for code formatting.
• Use GitHub actions for CI and publishing.
• Integrate read the docs for the project so that documentation is done automatically.
• Maybe consider using pytest.
• Looks for good ways to re-distribute to the different OSes (port, homebrew) once it is stable enough.

[gevrey]

These are very good news, thanks @vinitkumar !

[vinitkumar]

Some feature requests:

• Google Takeouts
• Gmail Support