Discrepancy in claim, discover and trust commands in CLI

[addievo]

Specification

Currently the claim command in Polykey-CLI uses the following syntax

npm run polykey -- identities claim github.com GITHUBUSERNAME

Whereas the discover and trust commands use

npm run polykey -- identities discover github.com:ANOTHERGITHUBUSERNAME
npm run polykey -- identities trust github.com:ANOTHERGITHUBUSERNAME

The claim command is out of sync of trust and discover, as they both utilize a COLON to separate provider and identity, whereas the claim command uses a space, this discrepancy is a bug.

Tasks

1. src/identities/CommandClaim.ts to alter the input args to be in-line with trust and discover.
2. ...
3. ...

After this change, all the identity related functions of polykey would be syntactically identical.

[CMCDragonkai]

This is not a bug.