Scarecrow mecha tst

- [360 overview]: - [unity3d test]: A humble scarecrow cyborg mecha .) Object summary: - separate torso mesh(4096x4096 maps); - separate ’chassis’ mesh(4096x4096 maps); - separate torso armor(4096x4096 maps); - separate ’hammer’ mesh(2048x2048 maps); - separate gun mesh(2048x2048 maps); WIP object(root motionis is still in progess .)