Invite current stable prometheus chart maintainers as collaborators with write access

[scottrigby]

• 1. We can start by adding a single GitHub CODEOWNERS file to reproduce what the prow OWNERS files contain now. This can help with enabling required reviews on pull requests
• 2. Then all collaborators can be invited with write access, without changing existing functionality from stable
  - [ ] 3. cleanup: remove the prow OWNERS files Edit: will be done as part of Prep initial charts indexing #14 so the initial helm index will be clean

📊 Maintainers poll

Do we want to keep this level of granularity, or would it be better to give all collaborators write access to all charts in this repo? Let's discuss in comments below…

[asherf]

👋

[scottrigby]

Invited all current maintainers as collaborators to this repo, and also pinged everyone in Slack ✅

[scottrigby]

Will close this issue for now since tasks are done ✅ but we can still comment here in the meantime if there is overwhelming concern about implementation and re-open if needed ⏳

[Xtigyro]

I believe we should keep the OWNERS file and the granularity because different people are involved in developing the different charts though closely related.

I do think though that we should all have owners permissions regarding the repo. This shouldn't take away from the actual permission to push commits/approve PRs for the different charts.

[scottrigby]

@Xtigyro after slack chat, I understand what you mean. OK so yes, keeping CODEOWNERS file as-is, but can not change access level until after repo transfer. Also open questions about effects of combining that access level with CODEOWNERS file. Added all that to a new issue, to be addressed after the transfer: #20 Thanks!