Add encrypted wallet password prompt when sending funds from BSQ wallet

[pazza83]

Description

Assuming a Bisq user has turned on password protection for their Bisq wallet. The following is true:

When sending BTC from their Bisq wallet they are required to enter their encrypted wallet password.
When sending BSQ from their Bisq wallet they are NOT required to enter their encrypted wallet password.

It would increase Bisq wallet security if encrypted wallet password prompts were shown when sending both BTC and BSQ.

Version

v1.4.2

Steps to reproduce

In Bisq client > DAO > BSQ Wallet > Send

Enter BSQ address, enter amount, press 'SEND BSQ FUNDS'

No password prompt is shown.

Proposed behaviour

In instances were a Bisq user has turned on password protection for their Bisq wallet.

In Bisq client > DAO > BSQ Wallet > Send

Enter BSQ address, enter amount, press 'SEND BSQ FUNDS'

Encrypted wallet Password prompt is shown.

[pazza83]

In addition it would also be beneficial to include a confirmation screen when sending BSQ. In the same way a confirmation is shown when sending BTC.

Confirmation screen would show:

Sending: XX.XX BSQ
From address: B1.....
To receiving address:  B1.....
Required mining fee is:  0.00.... BTC (xx.xx satoshis/byte)
Transaction size: x.xxx kb

The recipient will receive: xx.xx BSQ

Are you sure you want the withdraw this amount?

This would improve usability when sending BSQ by allowing everything to be confirmed prior to sending.

Currently mining fees are not shown when sending BSQ and they can make a significant proportion of the cost when sending small amounts.