Allow library items to be dragged into other apps

apple/OmnivoreKit/Sources/Models/DataModels/FeedItem.swift

@@ -66,6 +66,13 @@ public extension LinkedItem {
   var unwrappedSavedAt: Date { savedAt ?? Date() }
   var unwrappedCreatedAt: Date { createdAt ?? Date() }
 
+  var deepLink: URL? {
+    if let id = id {
+      return URL(string: "omnivore://read/\(id)")
+    }
+    return nil
+  }
+
   var hasLabels: Bool {
     (labels?.count ?? 0) > 0
   }

apple/OmnivoreKit/Sources/Models/DeepLinkDecoder.swift

@@ -40,8 +40,7 @@ public extension DeepLink {
     case "saved-search":
       let named = url.path.replacingOccurrences(of: "/", with: "")
       return .savedSearch(named: named)
-    case "read":
-    case "shareExtensionRequestID":
+    case "read", "shareExtensionRequestID":
       let requestID = url.path.replacingOccurrences(of: "/", with: "")
       return .webAppLinkRequest(requestID: requestID)
     default:

apple/OmnivoreKit/Sources/Views/FeedItem/LibraryItemCard.swift

@@ -2,6 +2,17 @@ import Models
 import SwiftUI
 import Utils
 
+public extension View {
+  func draggableItem(item: LinkedItem) -> some View {
+    if #available(iOS 16.0, *), let url = item.deepLink {
+      return AnyView(self.draggable(url) {
+        Label(item.unwrappedTitle, systemImage: "link")
+      })
+    }
+    return AnyView(self)
+  }
+}
+
 public struct LibraryItemCard: View {
   let viewer: Viewer?
   let tapHandler: () -> Void
@@ -27,6 +38,7 @@ public struct LibraryItemCard: View {
       }
     }
     .padding(.bottom, 8)
+    .draggableItem(item: item)
   }
 
   var isFullyRead: Bool {