Adds TGS4 from https://github.com/tgstation/tgstation-server to Virgo, allowing auto-update functionality and testmerges.
How well it runs depends on how @Arokha sets things up. :p
- Instead of using auto_use_power to re-tally up machinery's power usage every cycle, track the steady "static" load separately from the transient "oneoff" usage. Machines then only need to inform the area when they use oneoff power or *change* their steady usage.
- Remove auto_use_power and stop SSmachines from calling it.
- Add vars to track "static" usage for each of the three power channels to /area
- Rename the existing three vars to "oneoff" so its clear what they mean (and to catch people accidentally updating them directly)
- Update area power procs and APCs to use the new variables.
- Rename /area/proc/use_power() to use_power_oneoff() to make it clear what it is doing.
- Deprecate /obj/machinery/use_power() in favor of use_power_oneoff() but don't delete yet. Can transition gradually.
- Add logic to the update_power procs on machines to calculate the deltas and update static area power whenever their usage changes.
- Add logic to machines to update area power when they are created, destroyed, or move.
- Moved /obj/machinery procs related to area power usage into machinery_power.dm to make them easier to find.
- Added or updated comments in several places to explain what is going on and how to use it.
- Its now possible to put shuttle consoles on a shuttle without a specific subtype or mapediting the shuttle_tag on them.
- After shtutle initialization, SSshuttles gives each initialized shuttle the chance to scan its areas for consoles it wants to claim and configure.
- Basically just refactor doWork() into fire() with the capablity to return in the middle with MC_TICK_CHECK.
- Move some vars around to be more organized.
- Only functional change is that when a turf is queued twice in one cycle, the second queue moves it to the end of the list instead of it being in the queue twice
- Instead of independently spawn'd while/sleep loops, it stores its state and lets the MC fire it.
- Convert relative path indentation procs to absolute path as per modern style standards.
- Break apart the inner loops into separate procs so you can see what is actually going on.
- It now shows up in MC tab, along with stats about what phase it is in.
