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.

lib/widgets/note_card.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 
+import 'package:notas/data/note_body.dart';
 import 'package:notas/models/note.dart';
 import 'package:notas/theme/app_palette.dart';
 
@@ -77,26 +78,27 @@ class _NoteCardState extends State<NoteCard> {
               // running the expensive TextPainter layout. This heuristic counts
               // newline characters and estimates wrapped lines based on an
               // average characters-per-line to handle many short lines well.
-              final List<String> rawLines = widget.note.body.split('\n');
+              final String bodyText = noteBodyToPlainText(widget.note.body);
+              final List<String> rawLines = bodyText.split('\n');
               const int avgCharsPerLine = 40;
               int estimatedLines = 0;
               for (final String line in rawLines) {
                 estimatedLines += (line.trim().length ~/ avgCharsPerLine) + 1;
               }
 
-              final bool needsPreciseMeasurement = estimatedLines > 20;
+              final bool needsPreciseMeasurement = estimatedLines > 15;
               final bool isBodyTruncated;
 
               if (needsPreciseMeasurement) {
                 final TextPainter textPainter = TextPainter(
                   text: TextSpan(
-                    text: widget.note.body,
+                    text: bodyText,
                     style: TextStyle(
                       color: palette.textSecondary,
                       fontSize: 14,
                     ),
                   ),
-                  maxLines: 20,
+                  maxLines: 15,
                   textDirection: TextDirection.ltr,
                 )..layout(maxWidth: constraints.maxWidth);
 
@@ -121,12 +123,12 @@ class _NoteCardState extends State<NoteCard> {
                   ),
                   const SizedBox(height: 8),
                   Text(
-                    widget.note.body,
+                    bodyText,
                     style: TextStyle(
                       color: palette.textSecondary,
                       fontSize: 14,
                     ),
-                    maxLines: 20,
+                    maxLines: 15,
                     overflow: TextOverflow.clip,
                   ),
                   if (isBodyTruncated) ...[