Summary: This diff creates the base classes for MapBuffer and its tests
Reviewed By: shergin
Differential Revision: D15550730
fbshipit-source-id: a5a47edebd7c3e1b8b2c3ad2006aee0f8bdb7866
Summary: Create structure of C++ side of mapbuffer project
Reviewed By: shergin
Differential Revision: D15529650
fbshipit-source-id: b563d3fbcfddcf46802ccb202e372233baad123d