refactor(substreams): Update ambient Substreams

substreams/ethereum-ambient/src/modules/2_store_pool_balances.rs

@@ -0,0 +1,18 @@
+use substreams::{
+    scalar::BigInt,
+    store::{StoreAdd, StoreAddBigInt, StoreNew},
+};
+use tycho_substreams::models::BlockPoolChanges;
+
+#[substreams::handlers::store]
+pub fn store_pool_balances(changes: BlockPoolChanges, balance_store: StoreAddBigInt) {
+    let deltas = changes.balance_deltas.clone();
+    for balance_delta in deltas {
+        let pool_hash_hex = hex::encode(&balance_delta.pool_hash);
+        balance_store.add(
+            balance_delta.ordinal,
+            format!("{}:{}", pool_hash_hex, balance_delta.token_type),
+            BigInt::from_signed_bytes_be(&balance_delta.token_delta),
+        );
+    }
+}