fix: 修复assets在example app中不能使用的问题 & 加入maven local的链接，修复flutter无法打包 aar的问题

lib/widgets/assistant_avatar.dart

@@ -18,6 +18,7 @@ class AssistantAvatar extends StatelessWidget {
       child: Image.asset(
         'assets/images/avatar.png',
         fit: BoxFit.contain,
+        package: 'ai_chat_assistant',
       ),
     );
   }

lib/widgets/chat_bubble.dart

@@ -123,7 +123,7 @@ class _ChatBubbleState extends State<ChatBubble> {
         break;
       case MessageStatus.completed:
       case MessageStatus.success:
-        icon = Image.asset('assets/images/checked.png', width: 20, height: 20);
+        icon = Image.asset('assets/images/checked.png', width: 20, height: 20, package: 'ai_chat_assistant',);
         color = Colors.white;
         break;
       case MessageStatus.failure:
@@ -301,7 +301,7 @@ class _ChatBubbleState extends State<ChatBubble> {
                           },
                           child: Padding(
                             padding: const EdgeInsets.only(left: 12),
-                            child: Image.asset('assets/images/copy.png',
+                            child: Image.asset('assets/images/copy.png',package: 'ai_chat_assistant',
                                 width: 22, height: 22),
                           ),
                         ),
@@ -315,9 +315,9 @@ class _ChatBubbleState extends State<ChatBubble> {
                           child: Padding(
                             padding: const EdgeInsets.only(left: 12),
                             child: _liked
-                                ? Image.asset('assets/images/liked2.png',
+                                ? Image.asset('assets/images/liked2.png',package: 'ai_chat_assistant',
                                     width: 22, height: 22)
-                                : Image.asset('assets/images/liked1.png',
+                                : Image.asset('assets/images/liked1.png',package: 'ai_chat_assistant',
                                     width: 22, height: 22),
                           ),
                         ),
@@ -331,9 +331,9 @@ class _ChatBubbleState extends State<ChatBubble> {
                           child: Padding(
                               padding: const EdgeInsets.only(left: 12),
                               child: _disliked
-                                  ? Image.asset('assets/images/disliked2.png',
+                                  ? Image.asset('assets/images/disliked2.png',package: 'ai_chat_assistant',
                                       width: 22, height: 22)
-                                  : Image.asset('assets/images/disliked1.png',
+                                  : Image.asset('assets/images/disliked1.png',package: 'ai_chat_assistant',
                                       width: 22, height: 22)),
                         ),
                       ],

lib/widgets/chat_footer.dart

@@ -49,7 +49,7 @@ class _ChatFooterState extends State<ChatFooter>
             child: GestureDetector(
               onTap: widget.onClear,
               child: Image.asset(
-                'assets/images/delete.png',
+                'assets/images/delete.png',package: 'ai_chat_assistant',
                 width: 24,
                 height: 24,
               ),
@@ -137,7 +137,7 @@ class _ChatFooterState extends State<ChatFooter>
             child: GestureDetector(
               onTap: () {},
               child: Image.asset(
-                'assets/images/keyboard_mini.png',
+                'assets/images/keyboard_mini.png',package: 'ai_chat_assistant',
                 width: 24,
                 height: 24,
               ),

lib/widgets/floating_icon.dart

@@ -140,7 +140,7 @@ class _FloatingIconState extends State<FloatingIcon>
                   Intl.getCurrentLocale().startsWith('zh')
                        ? _iconImages[_imageIndex]:_iconImagesEn[_imageIndex],
                         width: iconSize,
-                        height: iconSize,
+                        height: iconSize,package: 'ai_chat_assistant',
                       ),
               );
             },

lib/widgets/floating_icon_with_wave.dart

@@ -1,3 +1,4 @@
+import 'package:ai_chat_assistant/utils/assets_util.dart';
 import 'package:flutter/material.dart';
 import 'mini_audio_wave.dart';
 
@@ -36,6 +37,7 @@ class FloatingIconWithWave extends StatelessWidget {
             width: iconSize,
             height: iconSize,
             fit: BoxFit.contain,
+            package: AssetsUtil.packageName
           ),
           // 声波动画，距离底部13px的位置
           Positioned(

lib/widgets/rotating_image.dart

@@ -5,11 +5,14 @@ class RotatingImage extends StatefulWidget {
   final double size;
   final Duration duration;
 
+  final String? package; // 添加这个参数
+
   const RotatingImage({
     Key? key,
     required this.imagePath,
     this.size = 20,
-    this.duration = const Duration(seconds: 3)
+    this.duration = const Duration(seconds: 3),
+    this.package = 'ai_chat_assistant', // 默认值
   }) : super(key: key);
 
   @override
@@ -42,7 +45,8 @@ class _RotatingImageState extends State<RotatingImage>
       child: Image.asset(
         widget.imagePath,
         width: widget.size,
-        height: widget.size
+        height: widget.size,
+        package: widget.package, // 使用传入的package参数
       ),
     );
   }