[PRQ#76898] Orphan Request for ceres-solver-git

sfn [1] filed an orphan request for ceres-solver-git [2]: While the package still technically builds, it could do with some touch-ups as indicated in bartus' comments. The maintainer hasn't touched the package in years, and I would be willing to take over keeping it in shape. [1] https://aur.archlinux.org/account/sfn/ [2] https://aur.archlinux.org/pkgbase/ceres-solver-git/