Added .yml file to trigger test runs in e2e test repo

.github/workflows/test-trigger.yml

@@ -0,0 +1,25 @@
+name: Trigger E2E tests
+
+on:
+  push:
+    branches: [ staging ]
+
+jobs:
+  trigger:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Trigger E2E test run - local and remote
+        run: |
+          # Set the required variables
+          repo_owner="cryptpad" 
+          repo_name="e2e-test-suite"  
+          event_type="trigger-e2e-tests" 
+  
+          curl -L \
+            -X POST \
+            -H "Accept: application/vnd.github+json" \
+            -H "Authorization: Bearer ${{ secrets.TEST_PAT }}" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/cryptpad/e2e-test-suite/dispatches \
+            -d "{\"event_type\": \"$event_type\", \"client_payload\": {\"service\": \"$service\", \"version\": \"$version\", \"unit\": false, \"integration\": true}}"