chore: Add ci job to trigger update to enterprise

scripts/trigger-merge-to-ent

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+if [[ -z "${CIRCLE_REPOSITORY_URL}" ]]; then
+    exit 0
+fi
+
+if [[ "${CIRCLE_REPOSITORY_URL}" == *"boundary-enterprise"* ]]; then
+  exit 0
+fi
+
+if [[ -z ${CIRCLE_CI_ENT_TOK} ]]; then
+  exit 0
+fi
+
+curl -u ${CIRCLE_CI_ENT_TOK}: \
+  -d 'build_parameters[CIRCLE_JOB]=merge-oss-main' \
+  https://circleci.com/api/v1.1/project/github/hashicorp/boundary-enterprise/tree/main