Accepts empty password on new wallet and account creation

[manan-m-shah]

Not sure if it's intentional, but the commands below are accepting empty passwords.

forc wallet new
forc wallet account new

Can quickly patch this if required.

[kayagokalp]

I think we can disallow empty passwords as a security measure. cc @FuelLabs/tooling for ideatation

[kayagokalp]

@manan-m-shah are you still interested in implementing this? I think we want this implemented, and will likely look into it in coming weeks. If you want to take a shot, go for it!

[sdankel]

I agree, this would be a good security measure. This code changes will be in https://github.com/FuelLabs/forc-wallet