freedoom/attic: Old Freedoom resources never die, they just get put in the attic

miroir de https://github.com/freedoom/attic

Georgy Samoilov 473cfff763 Add low contrast rw18, rename some files		il y a 4 mois
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shawn_silver	473cfff763 Add low contrast rw18, rename some files	il y a 4 mois
wolf	e3ace68fa1 Take out the unrelated stuff, commit and squash	il y a 4 mois