[Vulkan] Sampler and texture support - something is rendering

[Vulkan] Sampler and texture support - something is rendering

- Textures are passed from the DALi side ( it's workaround )
- UVs are computed from vertex data so no atlasing ( text affected )
- Seems like there is a problem with RGB data ( working on it )
- The shader supports only one texture ( only first from texture set used )
- Only combined-image-sampler descriptor type supported at the moment
- Alpha transparency doesn't work yet
- Glitches in many textures
- Uploading is immediate and stalls the device, has to be improved
- The communication between core and graphics is a big workaround

Change-Id: I8a14807422681aa0ab8ea4c9dfe9a4437bbfae91