feat: Dismiss keyboard on view scroll.

Added the ability for the software keyboard to be dismissed when scrolling on a ListView in a chat and the chat list. This will help iOS users since they don't have a back button like Android.

lib/views/image_view.dart

@@ -3,8 +3,8 @@ import 'package:famedlysdk/famedlysdk.dart';
 import 'package:fluffychat/components/image_bubble.dart';
 import 'package:fluffychat/components/matrix.dart';
 import 'package:flutter/material.dart';
-import 'package:photo_view/photo_view.dart';
 import '../utils/event_extension.dart';
+import '../utils/platform_infos.dart';
 
 class ImageView extends StatelessWidget {
   final Event event;
@@ -19,6 +19,8 @@ class ImageView extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    var calcVelocity = MediaQuery.of(context).size.height * 1.50;
+
     return Scaffold(
       backgroundColor: Colors.black,
       extendBodyBehindAppBar: true,
@@ -43,9 +45,8 @@ class ImageView extends StatelessWidget {
           ),
         ],
       ),
-      body: PhotoView.customChild(
+      body: InteractiveViewer(
-        minScale: 1.0,
+        child: Center(
-        maxScale: 10.0,
           child: ImageBubble(
             event,
             tapToView: false,
@@ -57,6 +58,16 @@ class ImageView extends StatelessWidget {
             thumbnailOnly: false,
           ),
         ),
+        minScale: 1.0,
+        maxScale: 10.0,
+        onInteractionEnd: (ScaleEndDetails endDetails) {
+          if (PlatformInfos.usesTouchscreen == false) {
+            if (endDetails.velocity.pixelsPerSecond.dy > calcVelocity) {
+              Navigator.of(context).pop();
+            }
+          }
+        },
+      ),
     );
   }
 }