[Vulkan] SPIRV simplified reflection ( work in progress )

[Vulkan] SPIRV simplified reflection ( work in progress )

Reflection plugged under the pipeline.

Implemented:
- Parsing SPIRV code
- Providing VkDescriptorSetLayoutCreateInfo data based on the shader content
- Uniform objects are matched dynamically so no need to hardcode the
  layouts anymore.

Shader modules are not able to created the descriptor set layout on its own. Only when
attached to the pipeline, the DS layouts are created before creating pipeline layout.

Change-Id: Id615bd9fbf937ca2e8f1f6c0ff54d1d36f13fd0a