we can't use make_unique to create the animation object anymore because the constructor is private.
so used unique_ptr constructor instead.
Change-Id: I23b68c68d1b960085800365662ebb1cc676731cc
1. rename namespace player--> animation both cpp and c interface
2. added factory function to create animation object.
3. added render api to c interface.
Change-Id: I31c99a66678b20a0c743c564d399172f4182b0d1