wip(qa/performance): first cut of performance framework
wip(qa/perftest): record results as JSON files
wip(qa/perftest): add note about testresults to README
wip(qa/perftest): add SQL statementlog
wip(qa/perftest): add design rationale
wip(qa/preftest): result aggregation & reporting
wip(qa/perftest): add benchmak passes & report
chore(qa/perftest): move framework to src/main