Update to Cubism 5 SDK for Java R1

[wada-at-live2d-com]

Added

• Add a OpenGL shader setup class.

Changed

• Change so that LAppSprite does not depend on LAppDelegate.
• Change to read shader source codes from files.

Fixed

• Fix a problem where two application icons are generated when installing the Minimum sample application on a device.

Removed

• Remove description of CMake from development environment in README files.
  • CMake is not actually used.
• Remove the unnecessary if branch due to raising the minimum API version.
• Remove the description of NDK version.
  • Because of not using NDK.
• Remove the unnecessary variables in the LAppSprite class.