setMatrix method for the CircularProgressBar

[mesropd]

Add setMatrix(Matrix) method for the CircularProgressBar, for better quality use software layer.
This example snippet sets isometric matrix on the CircularProgressBar.

@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
...
circularProgressBar.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
            @Override
            public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) {
                Matrix matrix = getIsometricMatrix(circularProgressBar.getWidth(), circularProgressBar.getHeight());
                circularProgressBar.setMatrix(matrix);
                circularProgressBar.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
            }
        });
...
}

public static Matrix getIsometricMatrix(float w, float h) {
    Matrix matrix = new Matrix();
    final float pX = w / 2f;
    final float pY = h / 2f;
    final Camera camera = new Camera();
    camera.save();
    camera.rotateX(45);
    camera.rotateY(0);
    camera.rotateZ(0);
    camera.getMatrix(matrix);
    camera.restore();
    matrix.preTranslate(-pX,-pY);
    matrix.postTranslate(pX,pY);
    float sX = 1.0f;
    float sY = 1.0f;
    matrix.postScale(sX,sY);
    final float sPX =-(pX / w) * ((sX * w) - w);
    final float sPY =-(pY / h) * ((sY * h) - h);
    matrix.postTranslate(sPX,sPY);
    return matrix;
}