Add trigger for push to all branches starting with feature/

Author: Tom Zeilmann

.github/workflows/build.yml

@@ -2,7 +2,7 @@ name: Build CampusCoffee
 
 on:
   push:
-    branches: [ "main" ]
+    branches: [ "main", "feature/*" ]
   pull_request:
     branches: [ "main" ]