Add available(watchOS, unavailable) annotations to remaining types

Author: andrewheard

FirebaseAI/Sources/FirebaseAI.swift

@@ -156,6 +156,8 @@ public final class FirebaseAI: Sendable {
   ///   - systemInstruction: Instructions that direct the model to behave a certain way; currently
   ///     only text content is supported.
   ///   - requestOptions: Configuration parameters for sending requests to the backend.
+  @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, *)
+  @available(watchOS, unavailable)
   public func liveModel(modelName: String,
                         generationConfig: LiveGenerationConfig? = nil,
                         tools: [Tool]? = nil,

FirebaseAI/Sources/Types/Internal/Live/AsyncWebSocket.swift

@@ -21,6 +21,8 @@ private import FirebaseCoreInternal
 /// friendly interface for sending and consuming data from it.
 ///
 /// Also surfaces a more fine-grained ``WebSocketClosedError`` for when the web socket is closed.
+@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, *)
+@available(watchOS, unavailable)
 final class AsyncWebSocket: NSObject, @unchecked Sendable, URLSessionWebSocketDelegate {
   private let webSocketTask: URLSessionWebSocketTask
   private let stream: AsyncThrowingStream<URLSessionWebSocketTask.Message, Error>

FirebaseAI/Sources/Types/Internal/Live/BidiGenerateContentSetup.swift

@@ -73,4 +73,6 @@ struct BidiGenerateContentSetup: Encodable {
   }
 }
 
+@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, *)
+@available(watchOS, unavailable)
 struct BidiAudioTranscriptionConfig: Encodable {}