Expose benchmark details in result INSTRUMENTATION_STATUS

Added result fields with suffixes:
 model_name + "_std_dev": Inference time standard deviation in ms,
 model_name + "_total_time": Total benchmark runtime in ms,
 model_name + "_error": Total sum of MSE from each inference.
 model_name + "_iterations": Inferences count.

Test: NeuralNetworksApiBenchmark
Bug: 78139001
Change-Id: I34cb175b0780172e3435f78c346373e12610d52d
Merged-In: I34cb175b0780172e3435f78c346373e12610d52d
(cherry picked from commit b8640460cd0dc3d8e0d1e6fb82764374c4701923)
1 file changed