Refactor: Settings

[joneugster]

• rename "preferences" to "settings"
• layout switch with new "auto" state
• remove project selection from settings: it is available as a quick-select and those not fit into the settings
• fix: saving setting in local storage broken
• (internal) use jotai to manage the settings
• (internal) vertical slice for everything settings-related

Unfortunately, this PR temporarily disables the functionality to provide the settings through the searchParams. This should be addressed by using jotai-location to parse these params and will be addressed in a follow-up.

Fixes: #71
Follow-up: #81

[faenuccio]

I see that you marked #71 as resolved, but preferences/settings are still not saved locally on my firefox. Am I doing something wrong?

[joneugster]

I'm not sure the latest version has been deployed before I went for holidays. Might just be this. Let me reopen and wait to confirm

[joneugster]

Can't reopen from mobile. I'll deploy on the 6th and verify afterwards

[faenuccio]

Can't reopen from mobile. I'll deploy on the 6th and verify afterwards

Thanks!

[joneugster]

Now deployed to https://lean.math.hhu.de

Will be live on live.lean-lang.org when the FRO bumps their deployment (@nomeata)