[NodesGroup] Bring to the FN from NBitcoin

[dangershony]

• This should be applied styling and documentation
• Need to change to use the asyncloop
• Rename this component to avoid collisions with NBitcoin
• Remove not used methods

[dangershony]

Another one is to replace all the NBitcoin trace with the FN trace (ILogger)

[fassadlr]

[NStratis] Bring over and refactor NodeGroup

[fassadlr]

Refactored and moved over with #740