Removed TileEventType.TICK, use ITickable when really needed.
The few tiles needing to tick and are not a grid tile now implement ITickable.
Charger is no longer implementing ITickable.
This is first update pass, which is mainly import reorganization, name
fixes, etc... Although some parts of second were done where changes
aren't important.
Errors: ~1400 -> 82.
Reduces the visibility of all fields to private and create setters/getters
when necessary. Exceptions are fields with GuiSync as these need to be
public.
Reduces the visibility of internal methods to private/protected/default when possible.