Invasion Remover
removes the invasion and reverts the XWG respawn loop back to a thirty-minute timer.
technically speaking this runs before the update() function in data/scripts/galaxy/server.lua and detects when specific server values (specifically "xsotan_invasion_time") are non-nil and sets them automatically to the state they would be in had invasion been "failed" which allows the guardian to spawn when the vanilla update() function gets run.
