Composing multiple custom verification methods/signature suites is too complex

[ivan770]

Hi!

At the moment, to compose different custom verification methods/signature suites into structures similar to those provided by Any*, a developer has to manually re-implement at least the crypto_suites! macro, AnySigner, AnyResolver, and other similar structures.

Ideally, combining multiple different verification methods should be as simple as composing DID resolvers - using a tuple with all possible verification methods present as tuple items.