build: identify and centralise the build artifacts
build: identify and centralise the build artifacts

This collects the build artifacts into a central location for easy
handling by the CI system.

rudkx/swift,roambotics/swift,benlangmuir/swift,glessard/swift,xwu/swift,roambotics/swift,apple/swift,xwu/swift,ahoppen/swift,gregomni/swift,hooman/swift,xwu/swift,atrick/swift,JGiola/swift,gregomni/swift,benlangmuir/swift,ahoppen/swift,JGiola/swift,JGiola/swift,gregomni/swift,glessard/swift,JGiola/swift,roambotics/swift,benlangmuir/swift,ahoppen/swift,apple/swift,hooman/swift,benlangmuir/swift,gregomni/swift,gregomni/swift,atrick/swift,atrick/swift,ahoppen/swift,apple/swift,glessard/swift,xwu/swift,rudkx/swift,xwu/swift,glessard/swift,benlangmuir/swift,gregomni/swift,ahoppen/swift,atrick/swift,xwu/swift,glessard/swift,hooman/swift,benlangmuir/swift,glessard/swift,apple/swift,hooman/swift,rudkx/swift,atrick/swift,hooman/swift,atrick/swift,hooman/swift,ahoppen/swift,hooman/swift,apple/swift,roambotics/swift,JGiola/swift,roambotics/swift,rudkx/swift,apple/swift,JGiola/swift,rudkx/swift,roambotics/swift,rudkx/swift,xwu/swift