target a refactoring of this tricksy socket message handling code

[Connoropolous]

with its many levels of deserialization

I am specifically thinking of there being a dedicated type in typescript for each level of the deserialization process

https://github.com/holochain/holochain-conductor-api/blob/bcbcd25513ae72e5ea6c4c23ea19ca4b5396d3e4/src/websocket/client.ts#L72-L105