Add widget of the week videos (#72945)

packages/flutter/lib/src/material/switch_list_tile.dart

@@ -17,6 +17,8 @@ enum _SwitchListTileType { material, adaptive }
 
 /// A [ListTile] with a [Switch]. In other words, a switch with a label.
 ///
+/// {@youtube 560 315 https://www.youtube.com/watch?v=0igIjvtEWNU}
+///
 /// The entire list tile is interactive: tapping anywhere in the tile toggles
 /// the switch. Tapping and dragging the [Switch] also triggers the [onChanged]
 /// callback.

packages/flutter/lib/src/widgets/interactive_viewer.dart

@@ -15,6 +15,8 @@ import 'ticker_provider.dart';
 
 /// A widget that enables pan and zoom interactions with its child.
 ///
+/// {@youtube 560 315 https://www.youtube.com/watch?v=zrn7V3bMJvg}
+///
 /// The user can transform the child by dragging to pan or pinching to zoom.
 ///
 /// By default, InteractiveViewer may draw outside of its original area of the

packages/flutter/lib/src/widgets/scroll_view.dart

@@ -1457,6 +1457,8 @@ class ListView extends BoxScrollView {
 
 /// A scrollable, 2D array of widgets.
 ///
+/// {@youtube 560 315 https://www.youtube.com/watch?v=bLOtZDTm4H8}
+///
 /// The main axis direction of a grid is the direction in which it scrolls (the
 /// [scrollDirection]).
 ///