feat!: orb uses latest Noosphere capabilities

[cdata]

This change proposes a significant re-vamp / update for the Noosphere CLI (known as orb). The CLI has limped along and kept "working" for some time since we first implemented it last Fall. However, it has not received updates to make use of the latest Noosphere capabilities (such as petnames). And, there were some bugs here and there lingering in the uncovered surface area of the implementation.

• New auth subcommand to manage sphere authority
• New follow subcommand to follow or unfollow other spheres
• Spheres render peers in address book to filesystem
• New integration tests specifically targetting CLI
• Removes several unimplemented commands
• Many sub-commands have been regrouped underneath orb sphere

[cdata]

Related to safer-ffi feature flag change: getditto/safer_ffi#175

[justinabrahms]

Tried this out locally on an existing sphere I have. How do I show it where my key is?

 ✘  abrahms@subconscious-nix  ~/noosphere/sphere  orb sphere auth list
Error: No key named mykey found!
 ✘  abrahms@subconscious-nix  ~/noosphere/sphere  orb sphere status   
Error: No key named mykey found!
 abrahms@subconscious-nix  ~/noosphere/sphere  find ~/.noosphere/     
/home/abrahms/.noosphere/
/home/abrahms/.noosphere/keys
/home/abrahms/.noosphere/keys/mykey.public
/home/abrahms/.noosphere/keys/mykey.private
/home/abrahms/.noosphere/keys/notesync.public
/home/abrahms/.noosphere/keys/notesync.private

MIGRATION

cp ~/.noosphere/keys/* ~/.config/noosphere/keys/
mkdir .sphere/{peers,slugs} 

[cdata]

Thanks for the callout about the global .noosphere directory @justinabrahms

As of this change, we will be dynamically selecting the default global configuration directory using https://crates.io/crates/directories, so the old location (which may or may not have even been valid in non-WSL Windows) is no longer being used anywhere.

As before, the location can still be customized by embedders of the Noosphere library.

[jsantell]

Great work!