feat: 新增过渡页面路由、上传组件及完善跳转逻辑

- 为conquerPackage模块添加过渡页面路由并实现页面跳转逻辑
- 新增通用多图上传组件Upload，支持多种模式与图片操作功能
- 新增任务相关的API及Model基础文件
- 注释课前课中页面的测试试题内容

pubspec.lock

@@ -675,6 +675,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.7.0"
+  flutter_svg:
+    dependency: "direct main"
+    description:
+      name: flutter_svg
+      sha256: "35882981abcbfb8c15b286f0cd690ff25bac12d95eff3e25ee207f37d4c42e7f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.0"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -1143,6 +1151,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.9.1"
+  path_parsing:
+    dependency: transitive
+    description:
+      name: path_parsing
+      sha256: "883402936929eac138ee0a45da5b0f2c80f89913e6dc3bf77eb65b84b409c6ca"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
   path_provider:
     dependency: "direct main"
     description:
@@ -1748,6 +1764,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.6.0"
+  vector_graphics:
+    dependency: transitive
+    description:
+      name: vector_graphics
+      sha256: "9d0e3b9cb16542ad660daee871e726a10d13a93b7b5391677c3160e8f5e83935"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.3"
+  vector_graphics_codec:
+    dependency: transitive
+    description:
+      name: vector_graphics_codec
+      sha256: "99fd9fbd34d9f9a32efd7b6a6aae14125d8237b10403b422a6a6dfeac2806146"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.13"
+  vector_graphics_compiler:
+    dependency: transitive
+    description:
+      name: vector_graphics_compiler
+      sha256: "4dca4feb77dc3ec7f6e27e49c53241eb8217f55e4f9b12599a27f8903bca5682"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
   vector_math:
     dependency: transitive
     description: