Draft: Merge request for listing changes in iopsys base-files vs owrt mainstream files.

This review if for https://project.iopsys.eu/issues/6806 issue:

Go through the different files in ./feeds/openwrt_core/package/base-files/iop-files and determine whether the changes compared to the version in ./feeds/openwrt_core/package/base-files/files are still needed. To get the history with git commit messages, use git log --follow. This will provide the reason for the change. Discuss with team about the changes to get consensus.

If the change is not needed, we can revert the change i.e. delete the file in iop-files.

If the change is still needed, we should check whether there is a better way to do it that does not involve patching, if not, then we should apply the patch to the corresponding file in the files-directory and delete the old file in iop-files

Each file change is in separate commit with log message corresponding the change. Each file has discussion started to know if there are other opinions. Best to look in commit view (shows commit log for the change)

Each change is up to decision if it is still needed. Final file changes should be merged into files directory and removed from iopsys-files.