Add assertion error when calling run_game with wrong argument order

[BurnySc2]

Using this example

python-sc2/examples/zerg/worker_split.py

Lines 43 to 48 in 76e4a43

	def main():
	run_game(
	maps.get("AcropolisLE"),
	[Bot(Race.Zerg, WorkerSplitBot()), Computer(Race.Terran, Difficulty.Medium)],
	realtime=True,
	)

Bot should come first, then the built-in-AI
Or for human play: Human player should come first, then the Bot