Request: Add file storage saving system (with memory cache)

[wvdhouten]

Purpose

Instead of using a Sqlite solution, I would also like to be able to use straight up files.

Desired solution

Add a machanism to save users, posts, etc. in files with an in-memory system aside from the existing Sqlite implementation.

Alternatives considered

No response

Additional context

Needs to play well with MS Identity
Might need some "encryption" or hashing for secrets

Could consider front-matter for the posts, an xml structure, or json.