feat: with sled db

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

crates/churn-server/Cargo.toml

@@ -11,6 +11,7 @@ publish.workspace = true
 
 [dependencies]
 churn-domain.workspace = true
+churn-capnp.workspace = true
 
 anyhow.workspace = true
 tokio.workspace = true
@@ -22,3 +23,6 @@ axum.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 uuid.workspace = true
+async-trait.workspace = true
+
+sled.workspace = true