Return client pk in Recovery functions

[bytemare]

Closes #384.

[bytemare]

At this point I'm wondering whether we should not simply bubble up the cleartext_creds from Recover() up to ClientFinish() and feed it to AuthClientFinalize() to avoid input arguments comments like

the optional encoded xyyz identity, which is set to xyz_public_key if not specified.

[chris-wood]

At this point I'm wondering whether we should not simply bubble up the cleartext_creds from Recover() up to ClientFinish() and feed it to AuthClientFinalize() to avoid input arguments comments like

Maybe! Would you be willing to draft a change so we can see what this looks like?

[bytemare]

@chris-wood here's what it looks like with cleartext_credentials. It's cleaner, I think

Regarding the implementation, I think we should adapt, yes

[bytemare]

@caw done :)