Inlude withdrawal pkh in the QR generated by authorizeStake CLI method

[Tommytrg]

The authorizeStake CLI method generates a QR code with the authorization to be scanned from myWitWallet. The way that is implemented right now in myWitWallet also includes an input for the withdrawal pkh to be introduced by the user.

We could improve the UX including the withdrawal pkh in the QR code in the following way allowing myWitWallet to complete the form itself:

<withdrawal>:<authorization (recoveryID,secp256k1[R,S)]>

It could be convenient to also log the authorization without the withdrawal