feat: 新增模型管理和供应商配置功能

### v1.1.0
- #### Added
  - 新增 AI 笔记风格选择
  - 新增 AI 笔记返回格式选择
  - 添加 AI 自定义笔记备注 Prompt
  - 添加任务失败重试
  - 添加全局设置页，可在设置页进行模型设置

- #### Optimize
  - 优化前端样式，优化用户体验
  - 增加生成中间产物，可用于失败后加快生成速度
- #### Fix
  - 修复视频截图视频过早删除错误

backend/app/enmus/task_status_enums.py

@@ -0,0 +1,28 @@
+import enum
+
+
+class TaskStatus(str, enum.Enum):
+    PENDING = "PENDING"
+    PARSING = "PARSING"
+    DOWNLOADING = "DOWNLOADING"
+    TRANSCRIBING = "TRANSCRIBING"
+    SUMMARIZING = "SUMMARIZING"
+    FORMATTING = "FORMATTING"
+    SAVING = "SAVING"
+    SUCCESS = "SUCCESS"
+    FAILED = "FAILED"
+
+    @classmethod
+    def description(cls, status):
+        desc_map = {
+            cls.PENDING: "排队中",
+            cls.PARSING: "解析链接",
+            cls.DOWNLOADING: "下载中",
+            cls.TRANSCRIBING: "转录中",
+            cls.SUMMARIZING: "总结中",
+            cls.FORMATTING: "格式化中",
+            cls.SAVING: "保存中",
+            cls.SUCCESS: "完成",
+            cls.FAILED: "失败",
+        }
+        return desc_map.get(status, "未知状态")