Refactor workflows - user reusable workflows (#2504)

Signed-off-by: Avgustin Marinov <Avgustin.Marinov@bosch.com>

.github/workflows/stale.yaml

@@ -0,0 +1,25 @@
+name: Mark & close stale issues
+
+on:
+  # enable running the workflow manually
+  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * *"
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/stale@v9
+        with:
+          repo-token: ${{ secrets.PAT_SECRET }}
+          days-before-stale: -1
+          days-before-close: 15
+          stale-issue-label: 'awaiting'
+          close-issue-message: |-
+            There has been no response from the original author so I closed this issue.
+            Please reach out if you have or find the answers we need so that we can investigate further.
+          only-labels: 'awaiting'
+          skip-stale-issue-message: 'true'
+          skip-stale-pr-message: 'true'