Bench: Starting with benchmarks for producer...

* Define bench for producer with async support
* Comment out `deny(unused_crate_dependencies)` because this lint can't
  differentiate between dev and none dev dependencies.

application/apps/indexer/sources/Cargo.toml

@@ -28,3 +28,7 @@ shellexpand = "3.0.0"
 [dev-dependencies]
 env_logger.workspace = true
 criterion = { workspace = true, features = ["async_tokio"] }
+
+[[bench]]
+name = "producer_benchmarks"
+harness = false

application/apps/indexer/sources/benches/producer_benchmarks.rs

@@ -0,0 +1,19 @@
+use criterion::{criterion_group, criterion_main, BenchmarkId, Criterion};
+
+async fn produce(val: usize, val_2: usize) {
+    //TODO AAZ:
+    assert_eq!(val, val_2);
+}
+
+fn producer_benchmark(c: &mut Criterion) {
+    let val = 1024;
+
+    c.bench_with_input(BenchmarkId::new("producer", val), &val, |bencher, &v| {
+        bencher
+            .to_async(tokio::runtime::Runtime::new().unwrap())
+            .iter(|| produce(v, v));
+    });
+}
+
+criterion_group!(benches, producer_benchmark);
+criterion_main!(benches);

application/apps/indexer/sources/src/lib.rs

@@ -1,4 +1,7 @@
-#![deny(unused_crate_dependencies)]
+// TODO AAZ: Write better comment.
+// This can't be used with benchmarks for now until issue "https://github.com/rust-lang/rust/issues/129637" is resolved.
+// #![deny(unused_crate_dependencies)]
+
 use thiserror::Error;
 
 #[macro_use]