feat: integrate Flutter Quill for rich text editing and update note handling

- Added Flutter Quill package for rich text editing capabilities.
- Refactored note body handling to support Quill's Document format.
- Updated note editor screen to use QuillEditor and QuillController.
- Enhanced note search functionality to convert note body to plain text.
- Modified note card display to show plain text from note body.
- Updated localization support for Quill in the app.
- Registered necessary plugins for URL launching and file selection on all platforms.
- Updated app icons and other assets for consistency across platforms.
- Updated pubspec.yaml and pubspec.lock to include new dependencies and versions.

windows/flutter/generated_plugin_registrant.cc

@@ -6,18 +6,24 @@
 
 #include "generated_plugin_registrant.h"
 
+#include <file_selector_windows/file_selector_windows.h>
 #include <flutter_secure_storage_windows/flutter_secure_storage_windows_plugin.h>
 #include <local_auth_windows/local_auth_plugin.h>
 #include <screen_retriever_windows/screen_retriever_windows_plugin_c_api.h>
+#include <url_launcher_windows/url_launcher_windows.h>
 #include <window_manager/window_manager_plugin.h>
 
 void RegisterPlugins(flutter::PluginRegistry* registry) {
+  FileSelectorWindowsRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("FileSelectorWindows"));
   FlutterSecureStorageWindowsPluginRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FlutterSecureStorageWindowsPlugin"));
   LocalAuthPluginRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("LocalAuthPlugin"));
   ScreenRetrieverWindowsPluginCApiRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("ScreenRetrieverWindowsPluginCApi"));
+  UrlLauncherWindowsRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("UrlLauncherWindows"));
   WindowManagerPluginRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("WindowManagerPlugin"));
 }