Add vendor dependencies script

scripts/vendor_dependencies.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+VENDOR_DIR="src/vendor"
+
+# Clean vendor directory
+rm -rf "$VENDOR_DIR"
+mkdir -p "$VENDOR_DIR"
+
+pip download --no-binary :all: -r src/runtime_requirements.txt -d "$VENDOR_DIR"
+
+echo "Vendored dependencies installed in $VENDOR_DIR"