Remove deepgram.listen, deepgram.manage|onprem, etc Dot Notation

[davidvonthenen]

Proposed changes

We should just require users to directly instantiate the classes and no longer have the Dot Notation mechanism. This is more or less a Javascript construct that we shouldn't carry forward in the next major version.

We had to ditch this in the .NET SDK because of the way .NET packaging works. It's actually what contributed to the "global" timeout issue here:
deepgram/deepgram-dotnet-sdk#207 (comment)

Context

Na

Possible Implementation

NA

Other information

NA