Fixed CGImages build error with watchOS

Author: rin-senpai

Sources/GoogleAI/PartsRepresentable+Image.swift

@@ -19,6 +19,11 @@ import UniformTypeIdentifiers
   import AppKit // For NSImage extensions.
 #endif
 
+#if os(watchOS)
+  import ImageIO
+  import CoreGraphics
+#endif
+
 private let imageCompressionQuality: CGFloat = 0.8
 
 /// An enum describing failures that can occur when converting image types to model content data.
@@ -38,7 +43,7 @@ public enum ImageConversionError: Error {
 
 #if canImport(UIKit)
   /// Enables images to be representable as ``ThrowingPartsRepresentable``.
-  @available(iOS 15.0, macOS 11.0, macCatalyst 15.0, *)
+  @available(iOS 15.0, macOS 11.0, macCatalyst 15.0, watchOS 8.0, *)
   extension UIImage: ThrowingPartsRepresentable {
     public func tryPartsValue() throws -> [ModelContent.Part] {
       guard let data = jpegData(compressionQuality: imageCompressionQuality) else {
@@ -50,7 +55,7 @@ public enum ImageConversionError: Error {
 
 #elseif canImport(AppKit)
   /// Enables images to be representable as ``ThrowingPartsRepresentable``.
-  @available(iOS 15.0, macOS 11.0, macCatalyst 15.0, *)
+  @available(iOS 15.0, macOS 11.0, macCatalyst 15.0, watchOS 8.0, *)
   extension NSImage: ThrowingPartsRepresentable {
     public func tryPartsValue() throws -> [ModelContent.Part] {
       guard let cgImage = cgImage(forProposedRect: nil, context: nil, hints: nil) else {
@@ -67,7 +72,7 @@ public enum ImageConversionError: Error {
 #endif
 
 /// Enables `CGImages` to be representable as model content.
-@available(iOS 15.0, macOS 11.0, macCatalyst 15.0, *)
+@available(iOS 15.0, macOS 11.0, macCatalyst 15.0, watchOS 9.0, *)
 extension CGImage: ThrowingPartsRepresentable {
   public func tryPartsValue() throws -> [ModelContent.Part] {
     let output = NSMutableData()