applies the new conventions for imaging tools agreed at BioHackEU23 #297

Job	Run time
Setup cache and determine changed repositories (3.7)	58s
Check file sizes	11s
Lint tool-list (3.7)	38s
Lint Python scripts (3.7)	14s
Lint R scripts (ubuntu-20.04, release)	1m 0s
Test tools (0, 3.7)	6m 32s
Test tools (1, 3.7)	2m 52s
Test tools (2, 3.7)	6m 6s
Test tools (3, 3.7)	3m 27s
Combine chunked test results (3.7)	45s
Check workflow success	1s
Deploy	0s
Report deploy status	0s
	22m 44s

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