Asynchronous vs Synchronous

[RWayne93]

I really liked how this wrapper was designed but I wanted an asynchronous implementation to suit some of my needs on some servers I am using this for

So I forked the repo and so far have made base.py and chat.py to be async using httpx (not sure if this is the best out there but it's one im familiar with) open to using a different async library than httpx if there are better alternatives.

Posting here in case this is something other people might want.

Maybe I can make a separate branch for this as I don't think this should be a PR I'm sure there was a good reason why this library was initially written as synchronous.

[RWayne93]

I have made some pretty decent progress on the async implementation

https://github.com/RWayne93/rocketchat_API

just need to finish up the rest of the unittests.