fix: add license in missing files

Author: shiyasmohd

common/src/indexer_service/http/health.rs

@@ -1,3 +1,6 @@
+// Copyright 2023-, Edge & Node, GraphOps, and Semiotic Labs.
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::subgraph_client::Query;
 use axum::{
     extract::Path,