Allow ecosystem extensions to use builder

Author: holly-cummins

core/deployment/src/main/java/io/quarkus/deployment/builditem/DevServicesResultBuildItem.java

@@ -250,6 +250,11 @@ public OwnedServiceBuilder<T> feature(Feature feature) {
             return this;
         }
 
+        public OwnedServiceBuilder<T> feature(String featureName) {
+            this.name = featureName;
+            return this;
+        }
+
         public OwnedServiceBuilder<T> description(String description) {
             this.description = description;
             return this;