Add basic 'mini_benchmark_runner'.

4 jobs from timing_helpers in 3 minutes 27 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #2808
build_cmake

00:40

 
  Test
passed #2809
run_tests

00:38

 
  Sanitizer
passed #2811
run_address_sanitizer

01:13

passed #2810
run_thread_sanitizer

00:55