Invert property attributes

Currently we have the Attribute which by default is READONLY, NON_ENUMERABLE and PERMANENT. Which means when we create a for example a data descriptor with only Attribute::READONLY (DataDescriptor::new(value, Attribute::READONLY)), One would expect it to be READONLY, ENUMBERABLE and CONFIGURABLE, but in reality it is READONLY, NON_ENUMERABLE and PERMANENT which is counter intuitive.

This is similar to what V8 does.