feat: Reintroduce category folding state saving

[OGJakearroo]

Describe the bug

All categories start folded even if they are expanded on the last session.

Steps to reproduce

Load up any dashboard with categories on it.

Impact

Very small impact, just annoying to open them every time.

Additional information

No response

Version

1.0.0-beta

Installation method

Docker Compose

Browser

Chrome

[ajnart]

Just fyi @Meierschlumpf I had it work with a cookie or localstorage before, I don’t necessarily think this warrants modifications of the board schema

[manuel-rw]

Just fyi @Meierschlumpf I had it work with a cookie or localstorage before, I don’t necessarily think this warrants modifications of the board schema

I disagree, we should persist the state in the database. Since we use proper migrations now, this isn't even difficult to do. Additionally, relying on the browser storage may not be ideal (e.g. switching between devices, ...)

[mhl66]

Either solution will be much appreciated: persistent in database or cookie-based: this seems urgent, extra clicks on homepage are dissatisfying.