No clean way to stop the daemon surfpool instance

[0xgsvs]

when surfpool is started with --daemon flag there is no clean way to stop it using the surfpool cli, user have to stop the instance with kill command .
adding stop subcommand would be ideal.

[VivekJaiswal18]

I would like to work on it

[0xzrf]

@0xgsvs I think you could just call the exit rpc method for this?
solved by this PR: #612

[0xgsvs]

Thanks for the pointer though I still think having a stop command would be a nicer UX for end users, not everyone would think to use the RPC method. (like me 😅)