graphics/imlib2_loaders: Update to 1.12.1

• Switch to DISTVERSION
• Use multi option since at least one needed to be selected or a empty install will happen
• Pet portlint, portclippy, portfmt and Q/A check
• Take maintainership

ChangeLog:
https://git.enlightenment.org/old/legacy-imlib2_loaders/src/branch/master/ChangeLog

PR: 276399