Move whole rmcp crate to offcial rust sdk (#44)

* get rid of async-trait

* move rmcp to official-rust-sdk

* replace master with main

* update readme, change license

* fix typo

* Update README.md

Co-authored-by: Jefry Dewangga <jefrydco@gmail.com>

* fix typos

---------

Co-authored-by: = <=>
Co-authored-by: Jefry Dewangga <jefrydco@gmail.com>

crates/rmcp-macros/src/lib.rs

@@ -0,0 +1,11 @@
+#[allow(unused_imports)]
+use proc_macro::TokenStream;
+
+mod tool;
+
+#[proc_macro_attribute]
+pub fn tool(attr: TokenStream, input: TokenStream) -> TokenStream {
+    tool::tool(attr.into(), input.into())
+        .unwrap_or_else(|err| err.to_compile_error())
+        .into()
+}