[Create Wallet] Info about Passphrase

[saiy2k]

App version: v0.1.91

The idea of this issue, is to make the app little informative about few basic things, like passphrase.

1. Even regular users, tend to forget/not know what's the best character length for passphrase.
2. New users might not understand the importance of passphrase.

To resolve this and not to overload the UI,

1. We can have an info button on the right side of the label.
2. Clicking it opens a popup, that says what passphrase is and min-max length of passphrase.

Popup text could be:

1. Passphrases offer extra security in the event that your seed phrase is exposed, or if someone else gains access to your wallet.
2. If you lose your passphrase, you will likely lose access to your coins.
3. Keep both the seedphrases and passphrases secure and not in same location.

Recommended length of Passphrase: 50 characters