shader: add distinct mesh shader type

src/graphics/shader/shader.h

@@ -88,6 +88,7 @@ struct ShaderMeshInputInfo: ShaderWorkgroupInputInfo {
 	uint32_t max_vertices         = 0;
 	uint32_t max_primitives       = 0;
 	uint32_t provoking_vertex     = 0;
+	bool     fast_launch          = false;
 
 	[[nodiscard]] constexpr uint32_t InputPrimitiveSize() const {
 		switch (static_cast<Prospero::PrimitiveType>(input_primitive)) {