Move skip-duplicate check to caller workflow and skip reserve-and-deploy/test when duplicates are detected

Author: rafal-k

.github/workflows/call-platformos-check.yaml

@@ -0,0 +1,13 @@
+name: Run platformos-check on Liquid files
+on:
+  push:
+    paths-ignore:
+      - '**/README.md'
+  pull_request:
+    paths-ignore:
+      - '**/README.md'
+  workflow_dispatch:
+
+jobs:
+  run-platformos-check:
+    uses: Platform-OS/gh-workflows/.github/workflows/run_platformos_check_reusable.yml@main