Adjust File Headers to be Proper Licenses

[Mcrich23]

The File headers in /Sources currently are a left over artifact from when this project was a Pull Request directly for Apple container. This is no longer the case and was never licensed to be Apple's code. Therefore the headers must be changed to this:

//===----------------------------------------------------------------------===//
// Copyright © 2025 Morris Richmna and the Container-Compose project authors. 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
//
//   https://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.
//===----------------------------------------------------------------------===//

It is a fairly simple change, just a matter of doing it.