feat: add copyright permission

Signed-off-by: Xinwei Xiong(cubxxw-openim) <3293172751nss@gmail.com>

scripts/function.sh

@@ -1,4 +1,18 @@
 #!/usr/bin/env bash
+# Copyright © 2023 OpenIM. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 #input:[10023,2323,3434]
 #output:10023 2323 3434
 list_to_string(){