Support adding all current members of a team

[yarikoptic]

Is your feature request related to a problem? Please describe.

Inability to easily add more than a single person at a time. There is a 3 year old WiP PR https://github.com/all-contributors/app/pull/127 to add multiple people at the same time. In our use case (https://github.com/con/open-brain-consent/pull/124) ideally, to avoid listing individual members, I would have loved to just be able to add the entire team to contributors.

I have tried in https://github.com/con/open-brain-consent/pull/124#issuecomment-1084715063 but it "failed" since submitted a PR for an entire organization (@con) instead of members of a team (@con/portuguese): https://github.com/con/open-brain-consent/pull/126/files

Describe the solution you'd like Be able to say

hey @all-contributors please add @con/portuguese for translation

and have all members of https://github.com/orgs/con/teams/portuguese to be submitted in a single PR to be added to contributors

Describe alternatives you've considered

listing individual ones whenever #127 is implemented, but it is not yet.

now I will need to spend time listing everyone individually in separate comments