feat(engine): add RocksDB engine run script (#3220)

Author: NathanFlurry

scripts/run/engine-rocksdb.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "${SCRIPT_DIR}/../.." && pwd)"
+
+cd "${REPO_ROOT}"
+
+RUST_LOG=debug \
+cargo run --bin rivet-engine -- start "$@"