feat: add discovery

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/churn/src/server.rs

@@ -0,0 +1,23 @@
+use std::net::SocketAddr;
+
+pub mod config;
+
+mod grpc_server;
+
+use crate::{api, state::SharedState};
+
+pub async fn execute(
+    host: impl Into<SocketAddr>,
+    grpc_host: impl Into<SocketAddr>,
+    config: config::ServerConfig,
+) -> anyhow::Result<()> {
+    let state = SharedState::new(config).await?;
+
+    notmad::Mad::builder()
+        .add(api::Api::new(&state, host))
+        .add(grpc_server::GrpcServer::new(grpc_host.into()))
+        .run()
+        .await?;
+
+    Ok(())
+}