Admin to be able to delete and recreate all repository webhooks

The code for deleting and creating webhook already exists.

Steps are probably:

Add to existing Admin only page with similar navigation as project dashboard (screenshot below)
Cloud functions
- Get all repositories
- For each repository
  1. UI button is clicked (single repo button or all repo button)
  2. UI calls cloud function with an array of UIDs (could be 1 UID in the array if single repo)
  3. New cloud function loops over UIDs and … a. calls existing delete repo webhook function b. on the previous step a completing successfully, call create repo webhook function
  4. Cloud function returns the total successful / failed webhook creations and display in UI

DashboardHub / PipelineDashboard