* debug option to track Entities
Set FILAMENT_UTILS_TRACK_ENTITIES to true when building libutils to
activate entity tracking. This adds two public methods:
getActiveEntities() and dumpActiveEntities() the later displays the
stack trace of where the remaining entities were allocated.
This is useful for tracking leaks.
* Update libs/utils/include/utils/EntityManager.h
Co-authored-by: Philip Rideout <philiprideout@gmail.com>
Co-authored-by: Philip Rideout <philiprideout@gmail.com>
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