adding a little cli to quickly convert space names to dids

[jakedahn]

To run this, if you are in ./labs/cli, you can run deno task name2did foo

deno task name2did foo
 NAME: foo
SPACE: did:key:z6MkrvSneCFqY1Fv6yBXtrZSRX7XcasyoTttPffFzRzaRnRv

If you need to modify the passphrase used to derive the space did, you can override it like so:

OPERATOR_PASS='yoyoyo' deno task name2did foo

 NAME: foo
SPACE: did:key:z6Mkg7fKkueYuduXcV5DNUiUyg812syaDYE2zkv4eo7qpJn