**Motivation**

In this PR we refactor some of the code and add functionality to work as
expected. Remove the txs magic hack data #2147

**Description**

* Add a `recipient` field to the privileged transactions.
* Deposit the value to the recipient instead of the `to` address.
* Add functionality to call a contract and make a deposit in the same
privileged transaction.
* Remove the signing of the privileged transactions.
* Remove the checking of the nonce and balance when making the deposit,
here we mint the tokens.
* Add new hook in the L2 to address this new features for the Privileged
Transactions.

Closes #2147

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Co-authored-by: fborello-lambda <[email protected]>
Co-authored-by: Federico Borello <[email protected]>
Co-authored-by: Estéfano Bargas <[email protected]>
Co-authored-by: Javier Chatruc <[email protected]>
Co-authored-by: Manuel Iñaki Bilbao <[email protected]>
Co-authored-by: Tomás Casagrande <[email protected]>