chore: add trigger for pipeline on main

.gitlab-ci.yml

@@ -2,6 +2,7 @@ image: haskell:8.10.7
 
 stages:
   - build
+  - trigger
 
 build-job:
   only: 
@@ -16,3 +17,13 @@ build-job:
   artifacts:
     paths:
       - dist
+
+trigger-mapservice-pipeline:
+  only: 
+    refs:
+      - main
+  stage: trigger
+  script:
+    - curl -X POST -F token=$MAPSERVICE_TOKEN -F ref=main https://git.cccv.de/api/v4/projects/252/trigger/pipeline
+
+