Exberry Integration - Websocket connection

[brianweir-da]

The Exberry Integration uses the aiohttp library in order to establish a websocket connection with Exberry. This library and its implementation doesn't provide any resiliency when the connection is closed or when we have an error message.

This issue is to provide resiliency and fault tolerance when issues occur.

Websocket library - https://docs.aiohttp.org/en/stable/index.html