Improve sparse texture failure errors
Provide more error messages that help debug implementation issues.
Affects:
KHR-GL46.sparse_texture2_tests.SparseTexture2Commitment
KHR-GL46.sparse_texture2_tests.SparseTexture2Lookup
KHR-GL46.sparse_texture2_tests.UncommittedRegionsAccess
KHR-GL46.sparse_texture_clamp_tests.SparseTextureClampLookupColor
KHR-GL46.sparse_texture_clamp_tests.SparseTextureClampLookupResidency
Components: OpenGL
VK-GL-CTS issue: 3653
Change-Id: I45876884de16d3619b57027b9f9038d3b3135507