refactor to use axum

packages/backend/src/health/mod.rs

@@ -1,3 +1,10 @@
-mod routes;
+use crate::store;
+use axum::http::StatusCode;
 
-pub use routes::*;
+pub async fn report_health() -> (StatusCode,) {
+    if store::can_reach_redis() {
+        return (StatusCode::OK,);
+    } else {
+        return (StatusCode::SERVICE_UNAVAILABLE,);
+    }
+}