Append privacy file to CocoaPods bundle

Kingfisher.podspec

@@ -36,6 +36,7 @@ Pod::Spec.new do |s|
 
   s.source       = { :git => "https://github.com/onevcat/Kingfisher.git", :tag => s.version }
   s.source_files  = ["Sources/**/*.swift"]
+  s.resource_bundles = {"Kingfisher" => ["Sources/PrivacyInfo.xcprivacy"]}
 
   s.requires_arc = true
   s.frameworks = "CFNetwork", "Accelerate"