[M108 Migration][NativeControl] InputPicker Migration

[M108 Migration][NativeControl] InputPicker Migration

This patch includes below changes:

- Rename InputPicker.[h|cc] to input_picker.[h|cc].
- And rename inputpicker directory to input_picker too.
- Layout struct was changed to class and it take charge of
  creating layout and handling callbacks.
- Add static |CreateAndShow*| functions to create and
  show pickers instead of |show*Popup|.
- Integrate |*popupCallback| for date picker to reduce duplication.
- Use Android's ColorChooserUIController for color chooser
  implementation.

Reference: https://review.tizen.org/gerrit/274457/

Change-Id: Iaac7ace5541067b799fc8f6fb804d6de3dd86cf6
Signed-off-by: Ayush Kumar <ayush.k123@samsung.com>