add lint ci and fmt

.github/workflows/lint.yml

@@ -0,0 +1,32 @@
+name: lint
+
+on:
+  pull_request:
+    branches:
+      - '**'
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  fmt:
+    name: fmt
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Rust nightly toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          components: rustfmt
+
+      - name: Cache Rust dependencies
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+
+      - name: Run cargo fmt
+        run: cargo +nightly fmt -- --check

crates/services/bls_aggregation/src/bls_agg.rs

@@ -60,7 +60,7 @@ impl BlsAggregatorService {
             avs_registry_service: avs_registry_service,
         }
     }
-    
+
     pub(crate) async fn write(
         &self,
     ) -> RwLockWriteGuard<'_, HashMap<TaskIndex, UnboundedSender<SignedTaskResponseDigest>>> {