[ABW-1599] Change FactorSource into enum

[CyonAlexRDX]

ABW-1599

‼️See this comprehensive Confluence page with changes

• Change FactorSourceID to contain one extra byte, which is an identifier of the FactorSourceKind
• Change FactorSource to be an enum

Before this PR we had to load the whole factor source from factorSourcesClient in order to know the FactorSourceKind of a Factor Source for a certain FactorInstance, this PR makes it possible to know the FactorSourceKind directly from the FactorSourceID.

The primary concern I had earlier with using an enum for FactorSource was that each individual FactorSource type (struct ***FactorSource) would contain a lot of duplication of properties. This PR solves that by putting all the shared properties into common: Common, which seems like an OK trade off.

• Import Olympia Software and Ledger
• Add Another Ledger (not via Import Olympia)
• Sign with Babylon software only (TX)
• Sign with Olympia Software only (TX)
• Sign with Olympia Ledger only (TX)
• Sign with "Babylon Ledger" only (TX)
• Sign with Babylon Software AND Olympia Software AND Olympia Ledger AND "Babylon Ledger" in same transaction, see TX, see Screen Recording (can skip to device signing, since Ledger takes long time...)
• Add offDeviceMnemonic

[kugel3]

Looks good. I don't have time to understand all the use sites, but it seems that it doesn't complicate things, and I trust you are using it correctly. The only thing is that would probably have a requirement func updateLastUsed(date: Date) so that var Common can be get only.

[kugel3]

Not sure this needs to include "Base"

[CyonAlexRDX]

it is a protocol BELOW FactorSourceProtocol which enum FactorSource conforms to. That enum cannot conform to FactorSourceProtocol since it cannot have static var kind: FactorSourceKind. Do you have a better name for it? :)