Add detailed sidenav and permalinks for widget catalog

 - fixes #11783

Author: dixita0607

src/_data/sidenav.yml

@@ -239,6 +239,43 @@
   permalink: /ui
 - title: Widget catalog
   permalink: /ui/widgets
+  children:
+    - title: Overview
+      permalink: /ui/widgets
+    - title: Design systems
+      expanded: false
+      children:
+        - title: Cupertino
+          permalink: /ui/widgets/cupertino
+        - title: Material components
+          permalink: /ui/widgets/material
+    - title: Base widgets
+      expanded: false
+      children:
+        - title: Accessibility
+          permalink: /ui/widgets/accessibility
+        - title: Animation
+          permalink: /ui/widgets/animation
+        - title: Assets
+          permalink: /ui/widgets/assets
+        - title: Async
+          permalink: /ui/widgets/async
+        - title: Basics
+          permalink: /ui/widgets/basics
+        - title: Input
+          permalink: /ui/widgets/input
+        - title: Interaction
+          permalink: /ui/widgets/interaction
+        - title: Layout
+          permalink: /ui/widgets/layout
+        - title: Painting
+          permalink: /ui/widgets/painting
+        - title: Scrolling
+          permalink: /ui/widgets/scrolling
+        - title: Styling
+          permalink: /ui/widgets/styling
+        - title: Text
+          permalink: /ui/widgets/text
 - title: Layout
   permalink: /ui/layout
   children:
@@ -552,7 +589,7 @@
         - title: Restore state on Android
           permalink: /platform-integration/android/restore-state-android
         - title: Target ChromeOS with Android
-          permalink:  /platform-integration/android/chromeos
+          permalink: /platform-integration/android/chromeos
         - title: Protect your app's sensitive content
           permalink: /platform-integration/android/sensitive-content
     - title: iOS
@@ -708,10 +745,10 @@
       permalink: /perf/app-size
     - title: Deferred components
       permalink: /perf/deferred-components
-#    - title: Memory
-#      permalink: /perf/memory
-#    - title: Power usage
-#      permalink: /perf/power
+    #    - title: Memory
+    #      permalink: /perf/memory
+    #    - title: Power usage
+    #      permalink: /perf/power
     - title: Rendering performance
       permalink: /perf/rendering-performance
     - title: Performance profiling
@@ -832,9 +869,9 @@
         - title: Release notes
           permalink: /tools/devtools/release-notes
     - title: Flutter Widget Previewer
-      permalink: /tools/widget-previewer  
+      permalink: /tools/widget-previewer
     - title: Flutter Property Editor
-      permalink: /tools/property-editor    
+      permalink: /tools/property-editor
     - title: SDK overview
       permalink: /tools/sdk
     - title: Flutter's pubspec options
@@ -860,7 +897,7 @@
 - title: Resources
   permalink: /resources
   children:
-#    - header: Learn
+    #    - header: Learn
     - title: FAQ
       permalink: /resources/faq
     - title: Books