applies the new conventions for imaging tools agreed at BioHackEU23 #179

Job	Run time
Setup cache and determine changed repositories (3.7)	1m 15s
Check file sizes	6s
Lint tool-list (3.7)	41s
Lint Python scripts (3.7)	11s
Lint R scripts (ubuntu-20.04, release)	1m 45s
Test tools (0, 3.7)	38m 14s
Test tools (1, 3.7)	21m 55s
Test tools (2, 3.7)	32m 41s
Test tools (3, 3.7)	39m 7s
Combine chunked test results (3.7)	43s
Check workflow success	3s
Deploy	0s
Report deploy status	0s
	2h 16m 41s

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