Add prototype for Firebase Vertex AI #5324

Job	Run time
pod-lib-lint (ios, macos-14)	2m 46s
quickstart (swift, macos-14, Xcode_15.3)	3m 47s
quickstart-ftl-cron-only	0s
pod-lib-lint (ios, macos-13)	9m 21s
pod-lib-lint (tvos, macos-14)	2m 56s
pod-lib-lint (tvos, macos-13)	4m 56s
pod-lib-lint (macos, macos-14)	2m 55s
pod-lib-lint (macos, macos-13)	4m 47s
spm (iOS, macos-13)	9m 51s
storage-integration-tests (Swift)	16m 39s
pod-lib-lint (watchos, macos-14)	3m 7s
spm (iOS, macos-14)	5m 44s
storage-integration-tests (ObjC)	5m 19s
pod-lib-lint (watchos, macos-13)	3m 41s
spm (tvOS, macos-13)	3m 58s
spm (tvOS, macos-14)	3m 4s
spm (macOS, macos-13)	3m 0s
spm (macOS, macos-14)	2m 34s
spm (catalyst, macos-13)	2m 56s
spm (catalyst, macos-14)	3m 19s
spm (watchOS, macos-13)	6m 32s
spm (watchOS, macos-14)	3m 16s
spm (macos-14, visionOS, Xcode_15.3)	2m 41s
storage-cron-only	0s
	1h 47m 9s

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