(server) chore: Rearrange server structure (#33)

Server/src/services/general_service.rs

@@ -0,0 +1,19 @@
+use tonic::{Request, Response, Status};
+
+use crate::protocol::general_service_server::GeneralService;
+use crate::protocol::{Empty, ServerInfo};
+
+pub(crate) struct GeneralServiceImpl;
+
+#[tonic::async_trait]
+impl GeneralService for GeneralServiceImpl {
+    async fn get_server_info(
+        &self,
+        _request: Request<Empty>,
+    ) -> Result<Response<ServerInfo>, Status> {
+        Ok(Response::new(ServerInfo {
+            lang: "Rust".into(),
+            ver: "0.1.0".into(),
+        }))
+    }
+}