Trigger localization weekly & when PR merged

Author: Cosifne

azure-pipelines/loc.yml

@@ -1,6 +1,20 @@
-trigger: none
+trigger:
+  branches:
+    include:
+    - main
+
 pr: none
 
+# localization result might not be ready when PR triggered the pipeline.
+# Run this weekly to make sure everything is localized.
+schedules:
+- cron: '0 12 * * 0'
+  displayName: Weekly localization run
+  always: true
+  branches:
+    include:
+    - main
+
 parameters:
   - name: publishLocalizationFile
     type: boolean