Add handling of `.skip_lint` file(s) #213

Job	Run time
Setup as in PR for workflows (3.11)	4m 1s
Setup as in CI for workflows (3.11)	4m 50s
Test linting of workflows (3.11)	32s
Test testing of workflows (0, 3.11)	6m 5s
Test testing of workflows (1, 3.11)	6m 44s
Test combining 'chunked' test results (3.11)	37s
	22m 49s

Provide feedback