Add service module

To multiplex discord bot and http server in shuttle

src/service.rs

@@ -0,0 +1,20 @@
+use crate::{Data, Error};
+
+pub(crate) struct NanoBot {
+    pub discord: poise::FrameworkBuilder<Data, Error>,
+    pub router: axum::Router,
+}
+
+#[shuttle_runtime::async_trait]
+impl shuttle_runtime::Service for NanoBot {
+    async fn bind(mut self, addr: std::net::SocketAddr) -> Result<(), shuttle_runtime::Error> {
+        let serve = axum::Server::bind(&addr).serve(self.router.into_make_service());
+
+        tokio::select! {
+            _ = self.discord.run_autosharded() => {},
+            _ = serve => {},
+        };
+
+        Ok(())
+    }
+}