feat: add quick search provider switcher and genre/label for extensions

- Add dropdown menu in search bar for instant provider switching
- Support genre & label metadata for extension downloads
- Bump version to 3.1.2 (build 61)

lib/constants/app_info.dart

@@ -1,8 +1,8 @@
 /// App version and info constants
 /// Update version here only - all other files will reference this
 class AppInfo {
-  static const String version = '3.1.1';
-  static const String buildNumber = '60';
+  static const String version = '3.1.2';
+  static const String buildNumber = '61';
   static const String fullVersion = '$version+$buildNumber';