Migrate boot animation from GLES 1.0 to GLES2.0.

Main changes in how rendering is done:
- Texts and images are drawing using a textured quad instead of glDrawTexiOES.
- Shaders are introduced to draw with textures.
- Frame fading is also done with shaders now, instead of drawing background
colored transparent rectangles.

Test: Verified the main animation, clock text, progress text and stock
android animation all render correctly.
Bug: 190093578

Change-Id: Ie3f336d22bcc9e24f06a2bd62683d7a8c87a85f6