Add Orchestra E2E healthcheck script

scripts/orchestra_e2e_healthcheck.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+main() {
+  for arg in "$@"; do
+    if [ "$arg" = --help ]; then
+      printf 'Usage: %s\n\n' "${0##*/}"
+      printf 'Healthcheck script for Orchestra E2E tests.\n'
+      printf 'Exits 0 with a success message if all checks pass.\n'
+      exit 0
+    fi
+  done
+
+  printf 'OK - all healthchecks passed\n'
+  exit 0
+}
+
+main "$@"