feat: Add ObjectTemplate NamedProperty and IndexedProperty handlers

[bakjos]

This PR adds support for property interceptors (named and indexed property interceptors). To avoid breaking the existing API I created some specific structures to force the return types: PropertyAttributeReturnValue, BooleanReturnValue, ArrayReturnValue, and wrappers for the PropertyCallbackInfo to allow different implementations of the Callbacks.

[CLAassistant]

All committers have signed the CLA.