feat: add uni-comfyui-sdk - Rust SDK for ComfyUI API

- Complete Rust SDK implementation based on OpenAPI specification
- All 23 endpoints implemented with type-safe interfaces
- Comprehensive error handling and async support
- Full documentation and examples included
- Client renamed to UniComfyUIClient for clear identification

cargos/uni-comfyui-sdk/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "uni-comfyui-sdk"
+version = "0.1.0"
+edition = "2021"
+description = "Rust SDK for ComfyUI Workflow Service & Management API"
+license = "MIT"
+repository = "https://github.com/your-repo/uni-comfyui-sdk"
+keywords = ["comfyui", "api", "sdk", "workflow"]
+categories = ["api-bindings", "web-programming::http-client"]
+
+[workspace]
+
+[dependencies]
+reqwest = { version = "0.11", features = ["json"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+tokio = { version = "1.0", features = ["full"] }
+thiserror = "1.0"
+url = "2.4"
+chrono = { version = "0.4", features = ["serde"] }
+
+[dev-dependencies]
+tokio-test = "0.4"