The swayidle command in the service was straight up broken, this commit
fixes that.
Environment Variables set in the `session-variables` file are now
correctly imported across the system. This fixes `EDITOR` defaulting to
`nano`.
Hibernation is now a core option:
```
pub-solar.core.hibernation.enable = true;
```
And there's a paranoia mode, that keeps the disk encrypted as much as
possible by enabling hibernation and removing the options for sleep,
screen locking.
Idle locking now hibernates, and it does it on very short notice.
teutat3s
Benjamin Bädorf