Add Azure login step to main_primechecker.yml

Add Azure login step to the workflow for authentication.

Author: klaeufer

.github/workflows/main_primechecker.yml

@@ -34,6 +34,13 @@ jobs:
           mvn clean package
           popd
 
+      - name: Azure login
+        uses: azure/login@v2
+        with:
+          client-id: ${{ secrets.AZURE_CLIENT_ID }}
+          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
+          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
+
       - name: 'Run Azure Functions Action'
         uses: Azure/functions-action@v1
         id: fa