feat(factory): add utility method which does the "unchecked" cast

lib/src/main/java/net/tomatentum/cutin/ReflectedMethodFactory.java

@@ -31,5 +31,10 @@ public interface ReflectedMethodFactory<I extends Object, C extends Object> {
 
         private ParserResults() {}
 
+        @SuppressWarnings("unchecked")
+        public <T extends Object> T get(Class<? extends MethodParser> key) {
+            return (T) super.get(key);
+        }
+
     }
 }