MiuiCamera from Xiaomi Mi A3

This repository can be used to ship Xiaomi's MiuiCamera app ported from the Mi A3 (laurel_sprout) on custom ROMs. The APK has been manually patched to make all functions work perfectly on ginkgo/willow. Prebuilt libcameraservice has been imported from ginkgo's MIUI 12 China Beta ROM to get 48MP and portrait mode working. Support for further devices can be added in future.