feat: 初始化Webhook中继系统项目

- 添加FastAPI应用基础结构，包括主入口、路由和模型定义
- 实现Webhook接收端点(/webhook/{namespace})和健康检查(/health)
- 添加管理后台路由和模板，支持端点、目标、渠道和模板管理
- 包含SQLite数据库模型定义和初始化逻辑
- 添加日志记录和统计服务
- 包含Dockerfile和配置示例文件
- 添加项目文档，包括设计、流程图和验收标准

config/config.yml

@@ -0,0 +1,45 @@
+server:
+  port: 8080
+  log_level: info
+routing:
+  remark_map:
+    imcgcd03: ["target_3"]
+    imcgcd02: ["target_2"]
+  default_targets: []
+targets:
+  - name: target_1
+    url: "https://httpbin.org/post"
+    timeout_ms: 5000
+  - name: target_2
+    url: "https://httpbin.org/post"
+    timeout_ms: 5000
+  - name: target_3
+    url: "https://httpbin.org/post"
+    timeout_ms: 5000
+notifications:
+  event_map:
+    wechat.complaint:
+      template: "⚠️请注意，您有新的微信投诉，请注意查看"
+      channels: ["feishu","wecom"]
+    refund.standard:
+      template: "退款成功，退款金额：{actual_ref_amt}"
+      channels: ["feishu","wecom"]
+    pay.ali_scaned:
+      template: "支付宝收款{trans_amt}元，状态：{cash_resp_desc}"
+      channels: ["feishu","wecom"]
+    pay.wx_scaned:
+      template: "微信收款{trans_amt}元，状态：{cash_resp_desc}"
+      channels: ["feishu","wecom"]
+channels:
+  feishu:
+    webhooks:
+      - "https://open.feishu.cn/your-bot-webhook"
+  wecom:
+    webhooks:
+      - "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=your-key"
+retry:
+  max_attempts: 3
+  initial_delay_ms: 500
+  max_delay_ms: 3000
+security:
+  outbound_signature: false