v2.2.0: Enter intercept mode + New themes

This update allows Handheld Daemon to send actions to the overlay to control it. This allows Handheld Daemon to grab the controller and avoid passthrough to games.

It also adds 2 new themes: Ocean and Diavolo and allows switching between them and the distribution theme, and tweaks the front page theme.

All of this functionality relies on the next version of Handheld Daemon.

Full Changelog: v2.1.0...v2.2.0