Feature Request: Prefix Copyright Text with SPDX Tag

Currently the copyright text is provided as a comment.

In the same way the license is prefixed with the `SPDX-License-Identifer:` tag, could this be prefixed with the `SPDX-FileCopyrightText:` tag per https://spdx.github.io/spdx-spec/v2.3/file-tags/#h2-file-tags-format ?

This would make machine parsing a bit easier and avoid some false positives when copyright appears in other contexts.

Thanks

Start by locating the code that emits the existing SPDX-License-Identifier tag and inspect the related tests, if present. Update the copyright comment output to use SPDX-FileCopyrightText, then verify that generated headers retain the expected license information and avoid unrelated copyright matches.

Written by the indexing model from the issue text.