fix relative motion support

[jafu888]

Still need cleanup and

more testing

[jafu888]

Now circular: ['box1', 900, 70],
Now setting high rotations can be use to influence animation
https://user-images.githubusercontent.com/15019413/174113813-b39e294c-f6f2-41af-9a92-034c3271cbc8.mp4

[oscar-ad]

What about mEndMotionPath.mId = mId?
Is it not relevant there?

[jswong65]

Core / Assemble checks failed. Could you please fix it

/home/runner/work/constraintlayout/constraintlayout/constraintlayout/core/src/main/java/androidx/constraintlayout/core/motion/Motion.java:34: error: cannot find symbol
import androidx.constraintlayout.core.motion.utils.Nullable;
> Task :core:compileJava
                                                  ^
  symbol:   class Nullable
  location: package androidx.constraintlayout.core.motion.utils
/home/runner/work/constraintlayout/constraintlayout/constraintlayout/core/src/main/java/androidx/constraintlayout/core/motion/Motion.java:241: error: cannot find symbol
    @Nullable
     ^
  symbol:   class Nullable
  location: class Motion

https://github.com/androidx/constraintlayout/runs/6941085866?check_suite_focus=true