Adds stale issue and PR check workflow

Implements a scheduled workflow to identify and flag stale issues and pull requests.

Configures the workflow to run daily and apply specific labels and messages to stale items, improving repository maintenance.

Author: jjsilva4

.github/workflows/stale.yml

@@ -0,0 +1,19 @@
+name: Check for stale issues and PRs
+
+on:
+  schedule:
+  - cron: "0 0 * * *"
+
+jobs:
+  stale:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/stale@v3 # See: https://github.com/actions/stale
+      with:
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+        stale-issue-message: 'Stale issue message'
+        stale-pr-message: 'Stale pull request message'
+        stale-issue-label: 'no-issue-activity'
+        stale-pr-label: 'no-pr-activity'