LibJS: Implement Object.defineProperties()

Author: https://github.com/linusg
Commit: da8a35a79e
Pull-request: https://github.com/SerenityOS/serenity/pull/6218
Reviewed-by: https://github.com/Lubrsi

Userland/Libraries/LibJS/Runtime/ObjectConstructor.h

@@ -46,6 +46,7 @@ private:
     virtual bool has_constructor() const override { return true; }
 
     JS_DECLARE_NATIVE_FUNCTION(define_property_);
+    JS_DECLARE_NATIVE_FUNCTION(define_properties);
     JS_DECLARE_NATIVE_FUNCTION(is);
     JS_DECLARE_NATIVE_FUNCTION(get_own_property_descriptor);
     JS_DECLARE_NATIVE_FUNCTION(get_own_property_names);