refactor(spec,loader): 精简项目结构，移除对json配置的支持

- 优化 spec,loader 部分功能合并到 mirror
- 移除 loader 降级策略逻辑
- 新增 logger.rs 统一日志处理
- 其他优化

Cargo.toml

@@ -30,9 +30,12 @@ dunce = "1.0.5"
 tracing = "0.1.44"
 tracing-subscriber = { version = "0.3", features = ["env-filter","fmt"] }
 tracing-appender = "0.2"
+serde = { version = "1.0.229", features = ["derive"] }
 tinyjson="2.5.1"
+#toml = "1.1.4+spec-1.1.0"
+
 
 
 [features]
-default = ["args"]
+default = []
 args=[]