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/model/tool.rs

@@ -0,0 +1,41 @@
+use std::{borrow::Cow, sync::Arc};
+
+/// Tools represent a routine that a server can execute
+/// Tool calls represent requests from the client to execute one
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+
+use super::JsonObject;
+
+/// A tool that can be used by a model.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Tool {
+    /// The name of the tool
+    pub name: Cow<'static, str>,
+    /// A description of what the tool does
+    pub description: Cow<'static, str>,
+    /// A JSON Schema object defining the expected parameters for the tool
+    pub input_schema: Arc<JsonObject>,
+}
+
+impl Tool {
+    /// Create a new tool with the given name and description
+    pub fn new<N, D, S>(name: N, description: D, input_schema: S) -> Self
+    where
+        N: Into<Cow<'static, str>>,
+        D: Into<Cow<'static, str>>,
+        S: Into<Arc<JsonObject>>,
+    {
+        Tool {
+            name: name.into(),
+            description: description.into(),
+            input_schema: input_schema.into(),
+        }
+    }
+
+    /// Get the schema as json value
+    pub fn schema_as_json_value(&self) -> Value {
+        Value::Object(self.input_schema.as_ref().clone())
+    }
+}