adding unique id to fault categories

src/main/java/com/webfuzzing/commons/faults/DefinedFaultCategory.java

@@ -259,6 +259,12 @@ public enum DefinedFaultCategory implements FaultCategory {
         this.fullDescription = Objects.requireNonNull(fullDescription);
     }
 
+    @Override
+    public String getId(){
+        //return the name of the enum
+        return super.name();
+    }
+
     @Override
     public int getCode() {
         return code;

src/main/java/com/webfuzzing/commons/faults/FaultCategory.java

@@ -2,9 +2,18 @@
 
 public interface FaultCategory {
 
+    /**
+     * A unique string that uniquely identify this fault category.
+     * This id is meant to be stable, and should not change among different releases of WFC.
+     * Fuzzer developers should be able to rely on these ids not changing.
+     * If for any reason an id must be changed, then that would trigger a new major release of WFC.
+     * Note the "code" are meant to be stable as well, however, those "might" change between minor releases.
+     */
+    public String getId();
+
 
     /**
-     * A unique code identifying this fault category
+     * A unique, 3-digit code identifying this fault category
      */
     public int getCode();