feat: add gold diff convenience scripts #2316

Job	Run time
download_test_data	6s
build (macos-latest)	2m 47s
java_matrix	2s
build (ubuntu-latest)	2m 26s
unit_tests (25)	2m 45s
unit_tests (21)	3m 26s
test_run-groovy	30s
dependency_analysis	1m 10s
test_clara	6m 9s
spotbugs	6m 53s
test_decoder	2m 36s
test_coatjava (ubuntu-latest, eb-eftpi)	1m 56s
test_coatjava (ubuntu-latest, eb-epc)	2m 5s
test_coatjava (ubuntu-latest, eb-eg)	1m 58s
test_coatjava (ubuntu-latest, eb-enc)	3m 56s
test_coatjava (ubuntu-latest, eb-ep)	2m 9s
test_coatjava (macos-latest, eb-ep, ./run-eb-tests.sh -100 electronproton)	4m 1s
test_coatjava (ubuntu-latest, kpp)	2m 48s
release_build	-1s
generate_documentation	1m 10s
deploy_web_pages	0s
final	2s
	48m 54s

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