adding total cost and episodic cost #132

Job	Run time
test-mujoco_py-envs (3.8, 1.3.1, ubuntu-22.04)	54s
test-core-envs (3.8, 1.3.1, ubuntu-22.04)	2m 11s
test-envpool-envs (3.8, 1.3.1, ubuntu-22.04)	56s
test-atari-envs (3.8, 1.3.1, ubuntu-22.04)	2m 26s
test-core-envs (3.8, 1.3.1, macos-latest)	3m 15s
test-atari-envs (3.8, 1.3.1, macos-latest)	2m 30s
test-mujoco_py-envs-gymnasium (3.8, 1.3.1, ubuntu-22.04)	58s
test-core-envs (3.8, 1.3.1, windows-latest)	3m 55s
test-atari-envs (3.8, 1.3.1, windows-latest)	4m 25s
test-mujoco-envs (3.8, 1.3.1, ubuntu-22.04)	2m 11s
test-mujoco-envs-mac (3.8, 1.3.1, macos-latest)	1m 28s
test-mujoco-gymnasium-envs (3.8, 1.3.1, ubuntu-22.04)	2m 30s
test-pettingzoo-envs (3.8, 1.3.1, ubuntu-22.04)	2m 4s
test-procgen-envs (3.8, 1.3.1, ubuntu-22.04)	2m 13s
test-procgen-envs (3.8, 1.3.1, macos-latest)	5m 16s
test-atari-multigpu-envs (3.8, 1.3.1, ubuntu-22.04)	2m 9s
test-procgen-envs (3.8, 1.3.1, windows-latest)	3m 24s
	42m 45s

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