Add CI job to remove skipped CI runs (#7736)

.github/workflows/ci-cleanup.yml

@@ -0,0 +1,55 @@
+run-name: Cleanup ${{ github.head_ref }}
+on:
+  pull_request_target:
+    types: labeled
+    paths:
+      - 'images/**'
+
+jobs:
+  clean_ci:
+    name: Clean CI runs
+    runs-on: ubuntu-latest
+    permissions:
+      actions: write
+    steps:
+      - env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: pwsh
+        run: |
+          $startDate = Get-Date -UFormat %s
+          $workflows = @("macos11", "macos12", "ubuntu2004", "ubuntu2204", "windows2019", "windows2022")
+
+          while ($true) {
+            $continue = $false
+            foreach ($wf in $workflows) {
+              $skippedCommand = "gh run list --workflow ${wf}.yml --branch ${{ github.event.pull_request.head.ref }} --repo ${{ github.repository }} --status skipped --json databaseId"
+              $skippedIds = Invoke-Expression -Command $skippedCommand | ConvertFrom-Json | ForEach-Object { $_.databaseId }
+
+              $skippedIds | ForEach-Object {
+                $deleteCommand = "gh run delete --repo ${{ github.repository }} $_"
+                Invoke-Expression -Command $deleteCommand
+              }
+
+              $pendingCommand = "gh run list --workflow ${wf}.yml --branch ${{ github.event.pull_request.head.ref }} --repo ${{ github.repository }} --status requested --json databaseId --template '{{ . | len }}'"
+              $pending = Invoke-Expression -Command $pendingCommand
+
+              if ($pending -gt 0) {
+                Write-Host "Pending for ${wf}.yml: $pending run(s)"
+                $continue = $true
+              }
+            }
+
+            if ($continue -eq $false) {
+              Write-Host "All done, exiting"
+              break
+            }
+
+            $curDate = Get-Date -UFormat %s
+            if (($curDate - $startDate) -gt 60) {
+              Write-Host "Reached timeout, exiting"
+              break
+            }
+
+            Write-Host "Waiting 5 seconds..."
+            Start-Sleep -Seconds 5
+          }