chore: Center story images

lib/pages/add_story/add_story_view.dart

@@ -17,6 +17,7 @@ class AddStoryView extends StatelessWidget {
   Widget build(BuildContext context) {
     final video = controller.videoPlayerController;
     return Scaffold(
+      backgroundColor: Colors.blueGrey,
       appBar: AppBar(
         systemOverlayStyle: SystemUiOverlayStyle.light,
         backgroundColor: Colors.transparent,
@@ -70,7 +71,7 @@ class AddStoryView extends StatelessWidget {
                   ? null
                   : DecorationImage(
                       image: MemoryImage(controller.image!.bytes),
-                      fit: BoxFit.cover,
+                      fit: BoxFit.contain,
                       opacity: 0.75,
                     ),
               gradient: controller.hasMedia

lib/pages/story/story_view.dart

@@ -182,9 +182,11 @@ class StoryView extends StatelessWidget {
                               : Container();
                         }
                         controller.loadingModeOff();
-                        return Image.memory(
-                          matrixFile.bytes,
-                          fit: BoxFit.cover,
+                        return Center(
+                          child: Image.memory(
+                            matrixFile.bytes,
+                            fit: BoxFit.contain,
+                          ),
                         );
                       },
                     ),