feat: Add GitHub Actions workflow to trigger IIAB integration tests

This workflow enables automated integration testing with Internet-in-a-Box (IIAB):

- Triggers on PR labeled 'test-iiab-integration'
- Triggers on merge to master
- Dispatches events to ascoderu/iiab-lokole-tests repository
- Posts test results back to PRs

Related to integration test suite at:
https://github.com/ascoderu/iiab-lokole-tests

Author: dahagag

.github/workflows/trigger-integration-tests.yml

@@ -0,0 +1,46 @@
+name: Trigger Integration Tests
+
+on:
+  pull_request:
+    types: [labeled, synchronize]
+  push:
+    branches:
+      - master
+
+jobs:
+  trigger-on-label:
+    if: github.event_name == 'pull_request' && contains(github.event.pull_request.labels.*.name, 'test-iiab-integration')
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Trigger integration tests
+        uses: peter-evans/repository-dispatch@v2
+        with:
+          token: ${{ secrets.INTEGRATION_TEST_PAT }}
+          repository: ascoderu/iiab-lokole-tests
+          event-type: test-integration-lokole
+          client-payload: |
+            {
+              "pr_number": ${{ github.event.pull_request.number }},
+              "ref": "${{ github.event.pull_request.head.ref }}",
+              "sha": "${{ github.event.pull_request.head.sha }}",
+              "repo": "${{ github.repository }}"
+            }
+  
+  trigger-on-merge:
+    if: github.event_name == 'push' && github.ref == 'refs/heads/master'
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Trigger post-merge tests
+        uses: peter-evans/repository-dispatch@v2
+        with:
+          token: ${{ secrets.INTEGRATION_TEST_PAT }}
+          repository: ascoderu/iiab-lokole-tests
+          event-type: lokole-merged
+          client-payload: |
+            {
+              "branch": "${{ github.ref_name }}",
+              "sha": "${{ github.sha }}",
+              "repo": "${{ github.repository }}"
+            }