feat: add gold diff convenience scripts #2364

Job	Run time
java_matrix	4s
build (ubuntu-latest)	2m 44s
download_test_data	6s
build (macos-latest)	3m 8s
unit_tests (25)	3m 9s
unit_tests (21)	3m 11s
test_run-groovy	1m 5s
test_clara	4m 38s
test_decoder	1m 51s
spotbugs	6m 57s
dependency_analysis	1m 26s
test_coatjava (ubuntu-latest, eb-eg)	1m 57s
test_coatjava (ubuntu-latest, eb-enc)	1m 59s
test_coatjava (ubuntu-latest, eb-ep)	1m 52s
test_coatjava (ubuntu-latest, eb-epc)	1m 57s
test_coatjava (ubuntu-latest, eb-eftpi)	1m 48s
test_coatjava (ubuntu-latest, kpp)	2m 57s
test_coatjava (macos-latest, eb-ep, ./run-eb-tests.sh -100 electronproton)	4m 4s
release_build	0s
generate_documentation	58s
deploy_web_pages	0s
final	4s
	45m 55s

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