PHP 8 and attributes: Version 2

[tacman]

This isn't really an issue or bug, but rather a discussion.

If you drop support for PHP 7, you could add attributes. I'm not sure what value it adds, but gut feeling is that there's something there.

Have you seen https://github.com/zenstruck/class-metadata? It is a attribute-driven composer plugin that I've found valuable. I haven't really used your bundle yet, I was just experimenting with the settings-bundle I referenced in the PR.