Cardano Updates

Remove redundant import

Signed-off-by: Sasha Bogicevic <[email protected]>

Describe the user script validator checks that would 
set the Hydra standard when it comes to safely committing 
to specified Head.

Remove unneeded imports/packages

Need to revisit this since it is not going through all values 
just naiively looks at outputs.

I realized we could utilize blueprint tx outputs for the 
purpose of depositing in complex scenarios (like reference inputs,
script utxo). This brings in much flexibility and we get to delete 
a lot of code but the user experience will be much better and we reduced 
the amount of bugs we could produce.

We now resolve inputs of a deposit tx and make sure they 
are contained withing the UTxO we deposited. Ideally we would 
query the deposit address to find the expected deposit but we 
are not in IO in our observation code.

This field will be used to return any change from the deposit 
back to the user provided address.