[PRQ#43062] Merge Request for arcus

MarsSeed [1] filed a request to merge arcus [2] into libarcus [3]: libarcus is the proper name for this software library. The libarcus package was last updated in 2015, but now both arcus and libarcus package have the same maintainer. @TimTechDev, please kindly update the libarcus package. I surmise the arcus package was created in 2022 only because the proper libarcus package couldn't be updated because of its MIA maintainer. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/arcus/ [3] https://aur.archlinux.org/pkgbase/libarcus/