Add KDocs for send method in Transport detailing message and options parameters

Author: devcrocod

kotlin-sdk-core/src/commonMain/kotlin/io/modelcontextprotocol/kotlin/sdk/shared/Transport.kt

@@ -18,6 +18,10 @@ public interface Transport {
 
     /**
      * Sends a JSON-RPC message (request or response).
+     *
+     * @property message The JSON-RPC message to send, either a request or a response.
+     * @property options Optional transport-specific options that control sending behavior.
+     * Different transport implementations may support different options.
      */
     public suspend fun send(message: JSONRPCMessage, options: TransportSendOptions? = null)