multimedia/celluloid: Update to 0.28

• Switch to release tarball
• Pet portclippy
• Pet portfmt
• Take maintainership

ChangeLog: https://github.com/celluloid-player/celluloid/releases/tag/v0.28
MFH: 2025Q2 (bugfixes)

(cherry picked from commit 8399bced239074623ac5ca0b45228619ec7a18b4)