apycot #2176598 Graph time taken by tests so as to check for performance impacts [validation pending]

Graph the end_time - start_time for each TestExcecution

prioritynormal
typeenhancement
done in2.2.2
load5.000
load left0.000
closed by#0153b3ad2308 [visualisation] graph of time taken by tests in "test reports" tabs (closes #2176598)