MotionLayout 구현해본 Sample 프로젝트 입니다.
https://www.wearemobilefirst.com/blog/android-animations-motionlayout
http:https://pluu.github.io/blog/android/2019/01/17/motionlayout-part1/
http:https://pluu.github.io/blog/android/2019/01/17/motionlayout-part2/