feat: add a way to get the capabilities of a built account

[tomyrd]

We should add an object that represents the capabilities of an account. It would be useful if we could somehow check what components were used to build an Account, meybe even expose the relevant storage for those components.

Some example usage:

• Getting the authentication scheme used, if any.
• Getting the public key from said authentication component.
• Getting the metadata of the faucet (i.e. decimals, symbol, etc.) if it includes that component.

Some comments for context:

• Case where we need the auth scheme. > comment
• Case where we need the storage of a specific component > comment

[bobbinth]

This may be relevant for the work @Fumuran is doing.

[Fumuran]

I'm implementing the ability to check whether the note could be consumed by some account with specified procedures, so it will for sure help to understand the capabilities of the account. Let me see how can I implement the capabilities you requested.