add github action to sync master branch

with upstream PRRTE master, starting once a day.

Signed-off-by: Howard Pritchard <[email protected]>

Author: hppritcha

.github/workflows/fork_sync.yaml

@@ -0,0 +1,23 @@
+name: Sync Fork
+
+on:
+  schedule:
+    - cron: '* 13 * * *' # every day at 13 hours
+  workflow_dispatch: # on button click
+
+jobs:
+  sync:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: tgymnich/[email protected]
+        with:
+          token: ${{ secrets.PRRTE_SYNC_UPSTREAM_MASTER_ID }}
+          owner: openpmix
+          base: master
+          head: master
+          auto_merge: true
+          auto_approve: false
+
+