Add a configurable quick access app on the right of the home screen

[infopunk]

Summary

This PR adds functionality to pick an app for "quick access" by swiping right on the home screen. A swipe left opens the home screen again.

The current PR only supports three predefined apps, because I wanted to see if more people would enjoy this functionality before spending more time on generalizing this. My personal use case is to quickly open my (WIP) home assistant app, allowing me to control my devices without having to go through the app menu first.

Notes:

• Currently, the icon in the settings app is reused from the about option. Maybe a new icon would be a better fit.
• Swiping back doesn't work for apps that capture the event, such as the music app.

[github-actions]

Build size and comparison to main:

Section	Size	Difference
text	385636B	404B
data	944B	0B
bss	22648B	8B

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