Update leveldb to 1.22
The build system changed to CMake.
Links for the changes:
Signed-off-by: Martin Reboredo <firstname.lastname@example.org>
Test Plan: Built pytorch and minetest against it, played a minetest a bit.
Reviewers: Triage Team, JoshStrobl
Reviewed By: Triage Team, JoshStrobl
Tags: Requires Rebuilds
Differential Revision: https://dev.getsol.us/D8973