feat: 实现数据库配置和模板迁移系统

- 配置MySQL数据库连接和TypeORM集成
- 创建N8nTemplate实体和动态实例实体
- 实现混合架构：代码逻辑+数据库配置
- 添加模板工厂服务和迁移服务
- 创建RESTful API控制器用于模板管理
- 将所有n8nTemplates模板整理为独立migration文件
- 添加完整的数据库迁移指南和使用文档
- 更新app.module.ts集成新服务和配置

input.md

@@ -1,35 +1,4 @@
------------
-图生图+生视频
------------
-
-https://n8n.bowongai.com/webhook/76f92dbf-785f-4add-96b5-a108174b7c14
-{
-    "workflow": "图生图+生视频",
-    "environment": "https://bowongai-test--text-video-agent-fastapi-app.modal.run",
-    "image_generation": {
-        "model": "gemini-2.5-flash-image-preview",
-        "prompt": "Please convert this photo into a highly detailed character model. Place in front of the model a delicate, colorful box featuring the printed image of the person from the photo. Behind the box, show a computer screen actively displaying the Blender modeling process. In front of the box, position the completed character model based on the provided photo, with the PVC texture clearly and realistically rendered. Set the entire scene in a bright, stylish indoor environment resembling a toy collector’s or hobbyist’s room—full of refined details, vibrant décor, and playful atmosphere. Ensure the lighting is crisp and luminous, highlighting both the model and its packaging.",
-        "image_url": "https://cdn.roasmax.cn/upload/e9066bf20fb546b09ece65d6fbcf2dd3.png"
-    },
-    "video_generation": {
-        "model": "302/MiniMax-Hailuo-02",
-        "prompt": "do anything you want",
-        "duration": "6",
-        "aspect_ratio": "9:16"
-    }
-}
-
---------
-图生图
----------
-
-https://n8n.bowongai.com/webhook/76f92dbf-785f-4add-96b5-a108174b7c14
-{
-    "workflow": "图生图",
-    "environment": "https://bowongai-test--text-video-agent-fastapi-app.modal.run",
-    "image_generation": {
-        "model": "gemini-2.5-flash-image-preview",
-        "prompt": "Please convert this photo into a highly detailed character model. Place in front of the model a delicate, colorful box featuring the printed image of the person from the photo. Behind the box, show a computer screen actively displaying the Blender modeling process. In front of the box, position the completed character model based on the provided photo, with the PVC texture clearly and realistically rendered. Set the entire scene in a bright, stylish indoor environment resembling a toy collector’s or hobbyist’s room—full of refined details, vibrant décor, and playful atmosphere. Ensure the lighting is crisp and luminous, highlighting both the model and its packaging.",
-        "image_url": "https://cdn.roasmax.cn/upload/e9066bf20fb546b09ece65d6fbcf2dd3.png"
-    }
-}
+服务：mysql-6bc9094abd49-public.rds.volces.com:53305
+数据库：nano_camera_miniapp
+账号：root
+密码：WsJWXfwFx0bq6DE2kmB6