Create a prototype for token revocation

[ikbalkaya]

We would like to create an initial prototype as a reference for libraries in other languages, also to support spec documentation as created ably/docs#1426 .

This prototype is expected to contain all necessary pieces to satisfy token revocation feature, but is not expected to be production ready yet. For example we can ignore documentation and tests for now. Architecture should reflect close to its final stages but will likely change by reviews from peers.

Todos:

• Create a new branch that will contain token revocation prototype
• Start implementing feature by following spec. But do not necessarily stick to this spec as prototype can inform changes on it.
• Add necessary classes and adapt to implementation of other REST based functions for networking layer. Make sure to check REST API documentation
• Ask Ably to enable this feature for the app that is going to be used
• Submit it for review to SDK team

┆Issue is synchronized with this Jira Story by Unito