[Feature] new horizontal scrolling implementation

[Rosemoe]

This pull request improves the general experience of horizontal scrolling.

Features

• smooth horizontal scrolling
• correct max horizontal scrolling offset
• dispatching touch events to children with transformed coordinate
• no reflection used in implementation

Known Problems

When horizontal scrolling is enabled:

• the view can not be correctly measured when it has wrap_content set as its width layout paramaters
• item clickable range is limited to 1,000,000 pixels

[dingyi222666]

Thanks for your contributions