feat(fdc): Streaming implementation for data connect #2844

Job	Run time
web (tests)	3m 29s
web-wasm (packages/cloud_firestore/cloud_firestore/example)	3m 29s
web (packages/cloud_firestore/cloud_firestore/example)	5m 55s
web-wasm (tests)	4m 50s
web-app-check	3m 42s
	21m 25s

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