telethon-asyncio refactor of the bridge + support for 'action' events from the backend

Complete refactor to support asyncio coroutines instead of threaded server

Motivation and Context

Allows us for proper events implementation where events and event-like jobs can be dispatched instead of doing processing and requiring a return value, which finishes the job.

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.