Swipe to Dismiss Images

Closes: #343

damus/Components/ImageCarousel.swift

@@ -179,6 +179,9 @@ struct ImageView: View {
                                 .offset(x: offset.width + offsetState.width, y: offset.height + offsetState.height)
                                 .gesture(SimultaneousGesture(zoomGesture, dragGesture))
                                 .gesture(doubleTapGesture)
+                                .modifier(SwipeToDismissModifier(onDismiss: {
+                                    presentationMode.wrappedValue.dismiss()
+                                }))
                             
                         }.padding(.bottom, 50) // Ensure carousel appears beneath
                     }