Add license text to new file

Author: soimkim

hooks/hook-fosslight_reuse.py

@@ -1,3 +1,7 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# Copyright (c) 2021 LG Electronics Inc.
+# SPDX-License-Identifier: Apache-2.0
 from PyInstaller.utils.hooks import collect_all
 
 datas, binaries, hiddenimports = collect_all('fosslight_reuse')