message: Add debugPrintfEXT to glsl syntax highlighting
diff: @@ -159,6 +159,8 @@ interpolateAtCentroid interpolateAtSample interpolateAtOffset EmitStreamVertex E
  EmitVertex EndPrimitive barrier memoryBarrier memoryBarrierAtomicCounter memoryBarrierBuffer
  memoryBarrierShared memoryBarrierImage groupMemoryBarrier
  +debugPrintfEXT
  +
  gl_CullDistance gl_FragCoord gl_FragDepth gl_FrontFacing gl_GlobalInvocationID gl_HelperInvocation
  gl_in gl_InstanceID gl_InvocationID gl_Layer gl_LocalInvocationID gl_LocalInvocationIndex
  gl_MaxPatchVertices gl_NumWorkGroups gl_out gl_PatchVerticesIn gl_PerVertex gl_PointCoord
  