feat(server): add tokio udp runtime

Cargo.lock

@@ -733,6 +733,7 @@ dependencies = [
  "getrandom 0.4.3",
  "irtt-proto",
  "thiserror 2.0.20",
+ "tokio",
 ]
 
 [[package]]
@@ -1737,9 +1738,21 @@ dependencies = [
  "mio",
  "pin-project-lite",
  "socket2",
+ "tokio-macros",
  "windows-sys",
 ]
 
+[[package]]
+name = "tokio-macros"
+version = "2.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78773a2a397f451582ce068015985c33193cf6dea8b74d2a639fe457b2f07b0e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 3.0.3",
+]
+
 [[package]]
 name = "typenum"
 version = "1.20.1"