Add prototype for Firebase Vertex AI #3228

Job	Run time
catalyst	4m 57s
pod-lib-lint (ios, macos-14)	11m 36s
spm (iOS, macos-13)	6m 20s
spm (iOS, macos-14)	5m 26s
pod-lib-lint (ios, macos-13)	17m 8s
pod-lib-lint (tvos, macos-14)	4m 26s
spm (tvOS, macos-13)	3m 59s
pod-lib-lint (tvos, macos-13)	4m 58s
spm (tvOS, macos-14)	3m 52s
spm (macOS, macos-13)	3m 38s
pod-lib-lint (macos --skip-tests, macos-14)	2m 28s
spm (macOS, macos-14)	4m 7s
pod-lib-lint (macos --skip-tests, macos-13)	3m 24s
spm (catalyst, macos-13)	3m 21s
pod-lib-lint (watchos, macos-14)	1m 48s
spm (catalyst, macos-14)	3m 15s
pod-lib-lint (watchos, macos-13)	2m 43s
spm (watchOS, macos-13)	4m 31s
spm (watchOS, macos-14)	3m 50s
spm (macos-14, visionOS, Xcode_15.3)	3m 56s
core-cron-only	0s
	1h 39m 43s

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