* Move `SecretEncryptedPayload` in `src/utils/@types`
* Move `encryptAES` to a dedicated file. Moved in a utils folder.
* Move `deriveKeys` to a dedicated file in order to share it
* Move `decryptAES` to a dedicated file. Moved in a utils folder.
* Move `calculateKeyCheck` to a dedicated file. Moved in a utils folder.
* Remove AES functions in `aes.ts` and export new ones for backward compatibility
* Update import to use new functions
* Add `src/utils` entrypoint in `README.md`
* - Rename `SecretEncryptedPayload` to `AESEncryptedSecretStoragePayload`.
- Move into `src/@types`
* Move `calculateKeyCheck` into `secret-storage.ts`.
* Move `deriveKeys` into `src/utils/internal` folder.
* - Rename `encryptAES` on `encryptAESSecretStorageItem`
- Change named export by default export
* - Rename `decryptAES` on `decryptAESSecretStorageItem`
- Change named export by default export
* Update documentation
* Update `decryptAESSecretStorageItem` doc
* Add lnk to spec for `calculateKeyCheck`
* Fix downstream tests
* Pull `SecretStorageCallbacks` out of `ICryptoCallbacks`
* Pull the storage part of SecretStorage out to a new class
* Move SecretSharing to a separate class
* Move `ISecretRequest` into `SecretSharing.ts`
* Pull out ISecretStorage interface, and use it
* Mark old `SecretStorage` as deprecated, and rename accesses to it
* Move a `SecretStorage` unit test into its own file
* Use new `SecretStorage` in a couple of places
* add some more unit tests
* Fix test file name
... to match the unit under test
* even more tests
* Add a load of comments
* Rename classes
* Fix some broken tsdoc links
* fix broken test
* Fix compaints about superlinear regex
* just one more test
