Add support for conversation image

lib/ui/widgets/custom_list_tile.dart

@@ -17,6 +17,7 @@ class CustomListTile extends StatelessWidget {
   final GestureTapCallback onTap;
   final GestureLongPressCallback onLongPress;
   final bool selected;
+  final Color tileColor;
 
   /// Custom onLongPress function
   final Function(Size, Offset) onLongPressWithInfo;
@@ -39,6 +40,7 @@ class CustomListTile extends StatelessWidget {
     this.selected = false,
     this.onLongPressWithInfo,
     this.onLongPressOpenMenu,
+    this.tileColor,
   })  : assert(isThreeLine != null),
         assert(enabled != null),
         assert(selected != null),
@@ -48,6 +50,7 @@ class CustomListTile extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return ListTile(
+      tileColor: tileColor,
       leading: leading,
       title: title,
       subtitle: subtitle,