Secret Network support on Multisig

[mohammedpatla]

Is your feature request related to a problem? Please describe. I think multisig support of Secret should be easy to add

Describe the solution you'd like https://multisig.keplr.app should add Secret Network, allowing secret multisigs to be imported.

Describe alternatives you've considered There is no alternative might be good usecase and easy integration for new users.

Additional context N/A