[Build logic, feature req] Automate rename, assetclean and/or re-extract when asset names change? #2647

When there's a change in the source that makes asset file locations outdated, a build can fail if one simply pulls down the new source and runs a "dirty" make. Typically the responsibility for keeping source changes from fouling builds lands upon the build system.

Maybe there's a way to trigger a full assetclean, or even to just move/rename/re-extract files from baserom to their new locations, when changes are made in the assets directory in the repo?

Consider it a low-priority request, the status quo doesn't exactly break anything; this is just a convenience matter.