fix: handle methods with pointer type params

fixes NativeScript#109

Author: Logikgate

NativeScript/runtime/ClassBuilder.mm

@@ -466,6 +466,8 @@
             return pdw->TypeEncoding()->type;
         } else if (wrapper->Type() == WrapperType::ObjCObject) {
             return BinaryTypeEncodingType::IdEncoding;
+        } else if (wrapper->Type() == WrapperType::PointerType) {
+            return BinaryTypeEncodingType::PointerEncoding;
         }
     }