lk2nd 0.16.0

Note: This is the last release on the legacy codebase as lk2nd
transitions to the updated tree.

- msm8974 improvements
- New variants for few Samsung devices, some renames
- Added Lenovo Vibe K5 variants

New devices:
- Vivo Y21L
- Motorola Moto G 4G
- Huawei G7 Plus
- Samsung Galaxy On7 2015 (SM-G600FY)
- HTC One M8
- Samsung G360T