Add Device Parameter metadata serialization to cirq_google #13058

Job	Run time
Build protos	18s
Coverage check	15m 37s
Build docs	14s
Changed files test	1m 53s
Doc test	3m 10s
Format check	15s
Isolated pytest Ubuntu	9m 22s
Lint check	2m 0s
Pytest MacOS (3.7)	6m 6s
Pytest MacOS (3.8)	6m 24s
Pytest MacOS (3.9)	6m 24s
Pytest MacOS (3.10)	6m 26s
Type check	2m 40s
Notebook formatting	16s
Notebook Tests against PR	15m 15s
Packaging test	1m 48s
Changed Notebooks Isolated Test against Cirq stable (partition-0)	19s
Changed Notebooks Isolated Test against Cirq stable (partition-1)	28s
Changed Notebooks Isolated Test against Cirq stable (partition-2)	19s
Changed Notebooks Isolated Test against Cirq stable (partition-3)	19s
Check consistency of requirements	35s
Pytest Ubuntu (3.7)	13m 44s
Pytest Ubuntu (3.8)	11m 37s
Pytest Ubuntu (3.9)	10m 20s
Pytest Ubuntu (3.10)	10m 38s
Misc check	4s
Shell check	7s
Bundle file consistency	1m 1s
Typescript tests coverage	45s
Typescript lint check	39s
Typescript tests	47s
Pytest Windows (3.7)	17m 56s
Pytest Windows (3.8)	15m 7s
Pytest Windows (3.9)	12m 49s
Pytest Windows (3.10)	13m 36s
	3h 9m 18s

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