Add classical simulator #13053

Job	Run time
Format check	17s
Misc check	4s
Changed files test	2m 3s
Doc test	2m 32s
Lint check	2m 4s
Type check	2m 19s
Notebook formatting	11s
Shell check	15s
Packaging test	1m 44s
Build docs	15s
Build protos	19s
Coverage check	3m 51s
Isolated pytest Ubuntu	3m 49s
Pytest MacOS (3.7)	3m 4s
Pytest MacOS (3.8)	3m 21s
Pytest MacOS (3.9)	3m 22s
Pytest MacOS (3.10)	3m 22s
Notebook Tests against PR	3m 49s
Changed Notebooks Isolated Test against Cirq stable (partition-0)	38s
Changed Notebooks Isolated Test against Cirq stable (partition-1)	25s
Changed Notebooks Isolated Test against Cirq stable (partition-2)	25s
Changed Notebooks Isolated Test against Cirq stable (partition-3)	28s
Check consistency of requirements	33s
Bundle file consistency	55s
Pytest Ubuntu (3.7)	3m 50s
Pytest Ubuntu (3.8)	3m 49s
Pytest Ubuntu (3.9)	3m 48s
Pytest Ubuntu (3.10)	3m 48s
Typescript tests coverage	42s
Typescript tests	44s
Typescript lint check	50s
Pytest Windows (3.7)	3m 36s
Pytest Windows (3.8)	3m 37s
Pytest Windows (3.9)	3m 37s
Pytest Windows (3.10)	3m 36s
	1h 12m 2s

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