OnePlus 5 - cheeseburger Upgrade nougat to Oreo/Pie

Officially supported by Lineage up to 16/Pie
Only Nougat version available for /e/. Unofficial Pie build (and previously oreo) of /e/ available (build by me) including ota. Works flawlessly as my daily driver. In the Pie beta thread I continually provide firmware only flashable zips. I am willing to contribute to the /e/ cheeseburger story if you want me to.