Add support for 2FA OAuth authentication about mailmerge HOT 2 CLOSED

This looks like a great start!

wording is changed in the interactive prompt e.g. from "password" to "password/token".

Perhaps adding a sample server config with some comments about this would work.

E.g I'm using oauth2ms, then I'm calling oauth2ms to obtain the token to input into the password prompt

Seems reasonable to me. The process would just need to be documented so others could replicate it. Maybe this would also be OK in the comments of the sample server config.

How about updating the sample server config and then making a pull request as a next step? From there, I can help with adding a unit test.

from mailmerge.

@awdeorio I've created a PR with the implementation, a sample server config and documentation about how to use it:

#152

from mailmerge.