Encrypted filestore #57
Description
A fallback store should be self-contained, easy to use and secure. The current credential helper fails at providing a self-contained store, it relies on pass which relies on gpg and is only Linux based. Credentials should always be encrypted and shouldn't require any setup or init run to get started. Users should also not need any additional tools to use it.
A library that could fit this scenario is age. It is a well-known library for file encryption and can be extended to support more niche cases if we need to (e.g. support Yubikeys).