adds the test workflow

.github/workflows/main.yml

@@ -7,13 +7,13 @@ on:
 jobs:
   example-job:
     runs-on: ubuntu-latest
-    
+
     steps:
       - name: print a welcome message
         run: echo "welcome to our first github actions workflow"
-  
+
       - name: checkout repository
         uses: actions/checkout@v5.0.0
-      
+
       - name: List repository files
         run: ls -la