VPN Quicksetting

Adds a quick setting for VPN to activate the last used one and deactivate the current one. Long press brings up g-c-c's network panel:

This also hides the docked mode and torch quick settings when there's not suitable hardware present and moves all icons into a subdir to unclutter data/.

Marking as draft since I need to review that myself but also since this goes on top of !973 (merged) .

Closes: #638 (closed), #695 (closed)