benchmark-toolbox: add benchmark-toolbox

a unified benchmarking tool

Source/Benchmark-Toolbox/source/gpu_stress.h

@@ -0,0 +1,6 @@
+#pragma once
+#include <stdbool.h>
+#include <stdint.h>
+
+bool gpu_stress_run(double *gflops_out, uint64_t *dispatches_out, uint64_t *mismatches_out);
+void gpu_stress_shutdown(void);