Put image wrapper back

Source/Shared/Library/ImageWrapper.swift

@@ -0,0 +1,32 @@
+import Foundation
+
+public struct ImageWrapper: Codable {
+  public let image: Image
+
+  public enum CodingKeys: String, CodingKey {
+    case image
+  }
+
+  public init(image: Image) {
+    self.image = image
+  }
+
+  public init(from decoder: Decoder) throws {
+    let container = try decoder.container(keyedBy: CodingKeys.self)
+    let data = try container.decode(Data.self, forKey: CodingKeys.image)
+    guard let image = Image(data: data) else {
+      throw StorageError.decodingFailed
+    }
+
+    self.image = image
+  }
+
+  public func encode(to encoder: Encoder) throws {
+    var container = encoder.container(keyedBy: CodingKeys.self)
+    guard let data = image.cache_toData() else {
+        throw StorageError.encodingFailed
+    }
+
+    try container.encode(data, forKey: CodingKeys.image)
+  }
+}