refactor: flatten ported module #186

Job	Run time
publish (dry-run)	22s
feature-matrix / Generate feature matrix	14s
test accelsim ()	1m 17s
test accelsim-sim ()	7m 49s
test accelsim-sim (upstream)	10m 35s
test accelsim-trace ()	6m 52s
test accelsim-trace (upstream)	8m 25s
test casimu ()	5m 2s
test casimu (python)	5m 4s
test invoke-trace ()	8m 15s
test playground ()	4m 4s
test playground-sys ()	3m 7s
test playground-sys (parallel)	4m 12s
test plot ()	1m 12s
test profile ()	1m 19s
test stats ()	34s
test trace ()	7m 52s
test trace (parallel)	7m 9s
test trace-model ()	29s
test utils ()	52s
test validate ()	14m 21s
test validate (remote)	12m 0s
test xtask ()	1m 7s
	1h 52m 13s

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