Custom Benefit API endpoints security/validation (#332)

* chore: Updated security and organization of CustomBenefit API Endpoints.

* chore: Added validation to DTOs used by CustomBenefit Resource.

Author: Justin-MacIntosh

builder-api/src/main/java/org/acme/constants/CollectionNames.java

@@ -5,7 +5,4 @@ public class CollectionNames {
     public static final String PUBLISHED_SCREENER_COLLECTION = "publishedScreener";
     public static final String WORKING_CUSTOM_CHECK_COLLECTION = "workingCustomCheck";
     public static final String PUBLISHED_CUSTOM_CHECK_COLLECTION = "publishedCustomCheck";
-    public static final String BENEFIT_COLLECTION = "benefit";
-    public static final String PUBLIC_BENEFIT_COLLECTION = "publicBenefit";
-    public static final String PUBLIC_CHECK_COLLECTION = "publicCheck";
 }