This ports the hover inventory indicator from /tg/, and by necessity, SSOverlays.
The hover inventory indicator basically shows where you are trying to
put an item, and then shows an item ghost in red or green, giving visual
feedback as to if that item will go in the slot or not.
SSOverlays is a much broader system for managing overlays, which should
eventually take over *all* overlays, but I have only ported the basic
system and implemented it where necessary for it to work for the hover
inventory items currently.
This commit adds the Nightshift lighting mode from /tg/. From 19:00 to
07:00 in station time, the station will go into a reduced-lighting mode,
with dimmed lights across the station.
In conjunction with this, there is a new configuration option to start
the shift time at a random time other than 12:00, so that players are
more likely to experience a night shift (as opposed to having to have a
7 hour round).
This commit ports the StonedMC from /tg/station, intended to replace the
Process Scheduler from goon. Currently, they exist simultaneously, as
it's very difficult to port our 22 processes to the SMC all at once.
Instead, we can make them work together until everything is converted
over at a later point, and then take the old PS out back and put a
couple of rounds into it's deformed skull.
Primary benefits of this new process controller include: Other people
that can actually maintain it, unlike the PS, pre-world-init
initialization for subsystems, ease of ports from /tg/station13, and
potential performance improvement (to be seen).
