feat: Use github_team_members for authoritative members management

[RafPe]

Hey there!

First of all great module 💪 While using it I noticed there is the possibility to use github_team_members to manage team membership so terraform becomes ultimately authoritative for the resource.

I would be happy to make a PR if u would be open to such change.

[soerenmartius]

Hi @RafPe ,

Thanks for your suggestion! Let me talk to the team tomorrow and come back to you :) Also, thanks for offering to contribute through PRs - we encourage you to do that!

Thanks!

[RafPe]

@soerenmartius any update ? Are you guys open for that kind of change ?

[tobiasehlert]

Hello there,

Great suggestion @RafPe ⭐

Using github_team_members should considerably decrease the use of the GitHub API, so this is almost required to go that way when running larger organisations.

How have the thoughts been @soerenmartius and @mariux regarding this?

Kind regards,
Tobias

[tobiasehlert]

Created PR #65 to add this feature :)

[RafPe]

@soerenmartius any updates on the possible merge ?