UI support for uploading image attachments

kordophone2/ConversationView.swift

@@ -6,6 +6,7 @@
 //
 
 import SwiftUI
+import UniformTypeIdentifiers
 
 struct ConversationView: View
 {
@@ -17,5 +18,10 @@ struct ConversationView: View
             TranscriptView(model: $transcriptModel)
             MessageEntryView(viewModel: $entryModel)
         }
+        
+        .onDrop(of: [UTType.image, UTType.fileURL], isTargeted: $entryModel.isDropTargeted) { providers in
+            entryModel.handleDroppedProviders(providers)
+            return true
+        }
     }
 }