Improvements to user footer

[BomberFish]

• Use gear instead of gearshape for settings icon
• Limit custom status to one line like the official client

[Sjmarf]

Icon comparison for convenience:

gear:

gearshape.fill:

I don't have a preference as to which one is better - it depends whether we want to prefer apple's design style or Discord's. The first is much more apple-like, the second looks similar to what Discord uses in their app.

[BomberFish]

I was (finally!) able to get Xcode builds working (updating to 14.3 final worked), so here's the user footer with my changes:

I was thinking of making the status a scrolling "marquee" text, but I felt that would be unnecessary as you could already see that in the user popout.

[cryptoAlgorithm]

Yup, I actually decided on the filled gear as I felt that matched Discord's style better. However it's clear we are after a more native look that flows with system apps, and as such I'll probably be merging this PR.