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/src/error.rs

@@ -0,0 +1,17 @@
+use std::fmt::Display;
+
+use crate::model::ErrorData;
+
+pub type Error = ErrorData;
+
+impl Display for ErrorData {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}: {}", self.code.0, self.message)?;
+        if let Some(data) = &self.data {
+            write!(f, "({})", data)?;
+        }
+        Ok(())
+    }
+}
+
+impl std::error::Error for ErrorData {}