tests: benchmarks: record benchmark results

Record benchmark results into a CSV file that can be used for tracking.
The data will be available in recording.csv in the build directory.

For example:

cat recording.csv

metric,cycles,nanoseconds
Average thread context switch using yield,11654,11654
Average context switch time between threads (coop),21149,21149
Switch from ISR back to interrupted thread,4928,4927
Time from ISR to executing a different thread,3872,3871
Time to create a thread (without start),4224,4223
Time to start a thread,10784,10783
Time to suspend a thread,10400,10399
Time to resume a thread,10688,10687
Time to abort a thread (not running),1536,1535
Average semaphore signal time,3424,3424
Average semaphore test time,1344,1344
Semaphore take time (context switch),12736,12735
Semaphore give time (context switch),17568,17567
Average time to lock a mutex,1632,1632
Average time to unlock a mutex,4738,4738

Signed-off-by: Anas Nashif <anas.nashif@intel.com>