[Feature Request]: Be able to implement an async Custom Storage about angular-auth-oidc-client

[jhpetersen]

Same same for me: i would like to store security data within a local SQLite db, but as all read/write operations are asynchronous, it is impossible to implement a custom storage provider for that use case.

Furthermore the hasStorage() method within BrowserStorageService could be problematic if the provided custom storage provider does not rely on default Storage interface..

[jhpetersen]

I would have liked to propose a PR, but just realized that synchronous calls to StoragePersistenceService read/write/remove/clear methods spreads over a lot of services/classes and these in turn are also synchronous methods, and so on.

So i assume implementing an async storage provider will result in huge effort to convert most parts of this library to async code, and thus will be a major/breaking change.

So the question to the creators/maintainers of this library: is this somehow on the roadmap?
(is there any roadmap at all? 🤔 😉)
Or do you see any possibility how to achieve this with less effort / limited changes?