chore: script to generate parser (#413)

Author: jcosentino11

Diff for: generate-parser.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+#
+# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+#
+set -e
+jjtree -OUTPUT_DIRECTORY=src/main/java/com/aws/greengrass/clientdevices/auth/configuration/parser src/main/javacc/RuleExpression.jjt
+javacc -OUTPUT_DIRECTORY=src/main/java/com/aws/greengrass/clientdevices/auth/configuration/parser src/main/java/com/aws/greengrass/clientdevices/auth/configuration/parser/RuleExpression.jj
+mvn license:format