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>

examples/rig-integration/config.toml

@@ -0,0 +1,10 @@
+deepseek_key = ""
+cohere_key = ""
+
+[mcp]
+
+[[mcp.server]]
+name = "git"
+protocol = "stdio"
+command = "uvx"
+args = ["mcp-server-git"]