Add a license

[petrbouda]

/**
 *  Copyright 2024 Petr Bouda
 *
 *  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.
 */

[petrbouda]

https://github.com/eclipse-ee4j/jersey/blob/2.x/NOTICE.md

[petrbouda]

Add // Modifications copyright (C) 2024 Petr Bouda to modified Apache 2 files

[petrbouda]

Add AGPLv3 License