Improve boot related cli output

[James-Mart]

psinode start message

Old message on initial execution of psinode: Need genesis block; use 'psibase boot' to boot chain
New message:
Node is not connected to any psibase network.

If the x-admin app is hosted at a subdomain, the message is further improved to:
Node is not connected to any psibase network. Visit '$protocol//$subdomain.psibase.127.0.0.1.sslip.io:$port' for node setup

• Where $protocol is https: if there is an https listen directive, http: otherwise.
• Where $subdomain is the subdomain at which the x-admin app is hosted, (usually x-admin.)
• Where $port is the listen port, https preferred, http fallback

For example, message might be:
Node is not connected to any psibase network. Visit 'https://x-admin.psibase.127.0.0.1.sslip.io:8070' for node setup

psibase boot message

Old message: Ok.
New message: Successfully booted $api

• Where $api is whatever URL was passed to the -a flag during boot

For example:
Successfully booted http://psibase.127.0.0.1.sslip.io:8069/