Add web-ext submit to submit listed add-ons to AMO #804

Workaround described below ⬇️

Is this a bug or feature request?

Feature request

What is the current behavior?

web-ext sign already successfully submits an extension for review, but then it throws an error.

What is the expected or desired behavior?

I don't need instant signing, so if the submission has been successful there should be a way to make it exit with 0.

Suggestions:

$ web-ext sign --submit-only
$ web-ext submit

Version information (for bug reports)

OS X 10.11.6

node --version && npm --version && web-ext --version

v7.2.0
3.10.9
1.8.1