refactor: refactor tool macros and router implementation (#261)

* refactor: refactor tool macros and router implementation

- Updated the `#[tool(tool_box)]` macro to `#[tool_router]` across various modules for consistency.
- Enhanced the `Calculator`, `Counter`, and `GenericService` structs to utilize `ToolRouter` for handling tool calls.
- Introduced `Parameters` struct for better parameter handling in tool functions.
- Added new methods for listing tools and calling tools in server handlers.
- Improved test cases to reflect changes in tool routing and parameter handling.
- Updated documentation and examples to align with the new router structure.

* fix: fix fmt and build error

* fix: fix test failure

* docs: documents for macros, fix ci

* fix: fix ci

* fix: fix wrongly replaced documents

* fix: remove useless file

* fix: change the parameter format for tool_router

* fix: update extract_doc_line to handle existing documentation and clean up unused code in server handler

* doc: update document for macro and examples

* doc: update readme and add contribute guide

* fix: fix type

examples/transport/src/http_upgrade.rs

@@ -24,7 +24,7 @@ async fn main() -> anyhow::Result<()> {
 async fn http_server(req: Request<Incoming>) -> Result<hyper::Response<String>, hyper::Error> {
     tokio::spawn(async move {
         let upgraded = hyper::upgrade::on(req).await?;
-        let service = Calculator.serve(TokioIo::new(upgraded)).await?;
+        let service = Calculator::new().serve(TokioIo::new(upgraded)).await?;
         service.waiting().await?;
         anyhow::Result::<()>::Ok(())
     });