Add support for token image via URI

[pkishan1990]

There should be some way for developers to add their own logo in the Authenticator app, just not only supporting popular websites.

For example:
otpauth://totp/Issuer%3Ajohn%40example.com?image=https://picsum.photos/100.png&secret=4ED3SSHWSYSHC3FTEZFIOFPLDFIT2R2Y&issuer=Issuer

[egrim]

This is a good idea! Can we get this reopened?

I'd suggest a first step is to edit the Key Uri Format definition to add an optional image parameter. This will help it get picked up by other authenticators (apparently FreeOTP already supports it).