Add script to lint integration test

contrib/lint-integtation-tests.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+#
+# The `integration_test` crate is not part of the workspace and cannot be built
+# with `--all-features`.
+
+set -euox pipefail
+
+REPO_DIR=$(git rev-parse --show-toplevel)
+
+# Run clippy for each feature starting with an integer i.e., all
+# the 'public' features.
+function main() {
+    pushd "$REPO_DIR/integration_test" > /dev/null
+
+    # Extract features that start with digits from the manifest.
+    features=$(grep -E '^[0-9]' Cargo.toml | grep '=' | cut -d' ' -f1)
+
+    for feature in $features; do
+        cargo +"$(cat ../nightly-version)" clippy --all-targets --features="$feature" -- -D warnings
+    done
+
+    popd
+}
+
+main "$@"
+exit 0