* introduce `GeneratorHistoryService` abstraction
* implement generator history service with `LocalGeneratorHistoryService`
* cache decrypted data using `ReplaySubject` instead of `DerivedState`
* move Jsonification from `DataPacker` to `SecretClassifier` because the classifier
is the only component that has full type information. The data packer still handles
stringification.
Matt provided a ton of help on getting the state interactions right. Both he
and Justin collaborated with me to write the core of of the secret classifier.
Co-authored-by: Matt Gibson <mgibson@bitwarden.com>
Co-authored-by: Justin Baur <19896123+justindbaur@users.noreply.github.com>
