Add classical simulator #13065

Job	Run time
Misc check	7s
Changed files test	2m 28s
Packaging test	1m 24s
Build docs	17s
Coverage check	3m 26s
Doc test	2m 48s
Build protos	22s
Format check	21s
Lint check	2m 13s
Type check	2m 45s
Pytest MacOS (3.7)	2m 36s
Pytest MacOS (3.8)	2m 50s
Pytest MacOS (3.9)	2m 53s
Pytest MacOS (3.10)	2m 57s
Isolated pytest Ubuntu	3m 30s
Notebook formatting	14s
Notebook Tests against PR	3m 31s
Changed Notebooks Isolated Test against Cirq stable (partition-0)	35s
Changed Notebooks Isolated Test against Cirq stable (partition-1)	34s
Changed Notebooks Isolated Test against Cirq stable (partition-2)	33s
Changed Notebooks Isolated Test against Cirq stable (partition-3)	35s
Check consistency of requirements	36s
Pytest Ubuntu (3.7)	3m 27s
Pytest Ubuntu (3.8)	3m 27s
Pytest Ubuntu (3.9)	3m 27s
Pytest Ubuntu (3.10)	3m 28s
Shell check	19s
Typescript tests coverage	45s
Typescript lint check	41s
Bundle file consistency	1m 23s
Typescript tests	46s
Pytest Windows (3.7)	3m 18s
Pytest Windows (3.8)	1s
Pytest Windows (3.9)	3m 19s
Pytest Windows (3.10)	3m 17s
	1h 5m 13s

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