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add optional efficiency check #2502

Job	Run time
download_test_data	4s
build (ubuntu-latest)	2m 47s
build (macos-latest)	4m 26s
java_matrix	4s
unit_tests (25)	2m 57s
unit_tests (21)	3m 27s
generate_documentation	1m 7s
spotbugs	6m 55s
test_run-groovy	28s
test_decoder	3m 1s
test_clara	4m 30s
test_coatjava (ubuntu-latest, kpp)	2m 58s
test_coatjava (ubuntu-latest, eb-epc)	2m 41s
test_coatjava (ubuntu-latest, eb-eg)	2m 2s
test_coatjava (ubuntu-latest, eb-eftpi)	2m 40s
test_coatjava (ubuntu-latest, eb-enc)	2m 37s
test_coatjava (ubuntu-latest, eb-ep)	2m 55s
test_coatjava (macos-latest, eb-ep, ./run-eb-tests.sh -100 electronproton)	3m 52s
release_build	-1s
deploy_web_pages	0s
final	4s
	49m 34s