Add prototype for Firebase Vertex AI #3047

Job	Run time
catalyst	3m 25s
integration	10m 10s
quickstart	4m 30s
pod-lib-lint (ios, macos-14)	4m 6s
spm (iOS, macos-13)	10m 51s
pod-lib-lint (ios, macos-13)	9m 0s
spm (iOS, macos-14)	8m 55s
pod-lib-lint (tvos, macos-14)	4m 26s
spm (tvOS, macos-13)	5m 23s
pod-lib-lint (tvos, macos-13)	7m 7s
spm (tvOS, macos-14)	5m 4s
pod-lib-lint (macos --skip-tests, macos-14)	4m 38s
spm (macOS, macos-13)	3m 43s
pod-lib-lint (macos --skip-tests, macos-13)	5m 4s
spm (macOS, macos-14)	4m 39s
pod-lib-lint (watchos, macos-14)	3m 44s
spm (catalyst, macos-13)	4m 26s
pod-lib-lint (watchos, macos-13)	5m 18s
spm (catalyst, macos-14)	3m 22s
spm (watchOS, macos-13)	7m 31s
spm (watchOS, macos-14)	3m 57s
spm (macos-14, visionOS, Xcode_15.3)	5m 4s
database-cron-only	0s
	2h 4m 23s

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