Allow upload of source code (and release/reviewer notes) using the API

[ElectronicManuel]

When uploading an addon using the API (https://addons-server.readthedocs.io/en/latest/topics/api/signing.html) there is no way to upload the source files automatically.

Steps:

1. push new version of the addon to repo
2. automated deployment deploys version to the mozilla store using the api
3. I navigate to the developer hub and upload the sources manually

It would be nice to have an api for uploading the source files in order to reduce manual intervention.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. If you think this bug should stay open, please comment on the issue with further details. Thank you for your contributions.

[stoically]

It might also be nice to allow attaching release- and reviewer-notes when uploading, so publishing could be completely automated.

This blocks mozilla/web-ext#804 & mozilla/web-ext#1624.

[IgnusG]

Any update on this issue? Just curios since it has been a while