feat(`cast`): add SIWE verification

[dipanshuhappy]

Component

Cast

Describe the feature you would like

Ideally what i imagine is

$ cast siwe verify --help

in the utils cast commands.

PS: I am open to work on this.

Additional context

No response

[zerosnacks]

Hi @dipanshuhappy can you share more about what the utility of something like this would be?