mesa/formatquery: Added SHADER_IMAGE_{LOAD,STORE,ATOMIC} <pname> queries

mesa/formatquery: Added SHADER_IMAGE_{LOAD,STORE,ATOMIC} <pname> queries

From the ARB_internalformat_query2 specification:

    "- SHADER_IMAGE_LOAD: The support for using the resource with image load
      operations in shaders is written to <params>.
      In this case the <internalformat> is the value of the <format> parameter
      that would be passed to BindImageTexture.

    - SHADER_IMAGE_STORE: The support for using the resource with image store
      operations in shaders is written to <params>.
      In this case the <internalformat> is the value of the <format> parameter
      that is passed to BindImageTexture.

    - SHADER_IMAGE_ATOMIC: The support for using the resource with atomic
      memory operations from shaders is written to <params>."

For all of them:

    "Possible values returned are FULL_SUPPORT, CAVEAT_SUPPORT, or NONE.
     If the resource or operation is not supported, NONE is returned."

Reviewed-by: Dave Airlie <airlied@redhat.com>