feat: implement admin api v1

apps/admin-api/src/routes.rs

@@ -0,0 +1,12 @@
+pub mod auth_profiles;
+pub mod operations;
+
+use axum::Json;
+use serde_json::json;
+
+pub async fn health() -> Json<serde_json::Value> {
+    Json(json!({
+        "service": "admin-api",
+        "status": "ok"
+    }))
+}