Add T-compiler ops team

[apiraino]

With this first step I'd like to formalize the existence and work of a T-compiler operation group.

This group will prepare meetings agenda, do issue triaging and prioritization, scheduling and documenting meetings.

It will replace the current Prioritization Working Group inside T-compiler.

r? @davidtwco

[github-actions]

Dry-run check results

[WARN  sync_team] sync-team is running in dry mode, no changes will be applied.
[INFO  sync_team] synchronizing github
[INFO  sync_team] 💻 Team Diffs:
    ➕ Creating team:
      Org: rust-lang
      Name: compiler-ops
      Description: Managed by the rust-lang/team repository.
      Privacy: closed
      Members:
        apiraino: member