Add Carthage support for both watchOS and iOS platform

According to Cathage default behavior, Carthage would download iOS version zip to extract framework, which would cause that watchOS building failed. Because Kingfisher from `8.3.0` has 2 zip bundles for resource.
Add a Kingfisher.json as a workaround to let Carthage users to download the right zip by `binary "https://raw.githubusercontent.com/onevcat/Kingfisher/master/Kingfisher.json"`

Kingfisher.json

@@ -0,0 +1,5 @@
+{
+  "8.3.2": "https://github.com/onevcat/Kingfisher/releases/download/8.3.2/Kingfisher-8.3.2.xcframework.zip",
+  "8.3.1": "https://github.com/onevcat/Kingfisher/releases/download/8.3.1/Kingfisher-8.3.1.xcframework.zip",
+  "8.3.0": "https://github.com/onevcat/Kingfisher/releases/download/8.3.0/Kingfisher-8.3.0.xcframework.zip"
+}