Added workflow to batch close all open issues

.github/workflows/close_all_issues.yml

@@ -0,0 +1,16 @@
+name: Close all issues
+
+on:
+  workflow_dispatch:
+    branches:
+      -master
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v9
+        with:
+          days-before-issue-close: 0
+          days-before-issue-stale: 0
+          close-issue-message: 'Our issue tracking has moved! If you are still experiencing issues with MSCL please open a ticket on the [MicroStrain Support Portal](https://support.microstrain.com/)'