Creating TumbleBit sessions

Remove the api version 

Added State machine to save the current state of the tumbling session

Added support for the tumbling bit to receive blocks

Add stratis testnet to Breeze

Tidying of Breeze's sync manager

Moving the wallet feature to the full node

Added tumbler API methods

* Removed Refit in favor of Flurl

* Removed Refit ns

Fixed reference to microsoft.aspnetcore.mvc.core

Tumble bit integration groundwork

NStratis and NBitcoin are not playing nicely together so as a temporary measure I've brought all the NTumbleBit code as part of our solution and I've replaced the reference to NBitcoin to NStratis. A solution possibly involving extern aliases should be integrated at some point.