Make empty generated source files descriptive #104

Job	Run time
Soundness / Check generated code	1m 17s
Cxx interop / Construct Cxx interop matrix	3s
Soundness / Swift license headers check	5s
Benchmarks / Construct Benchmarks matrix	3s
Unit tests / Construct unit test matrix	3s
Examples / Windows (6.0)	1s
Examples / Linux (5.9)	24s
Examples / Windows (nightly-6.0)	2s
Examples / Linux (5.10)	25s
Examples / Windows (nightly-main)	2s
Examples / Linux (6.0)	3m 28s
Soundness / API breakage check	1m 7s
Examples / Linux (nightly-6.0)	3m 5s
Examples / Linux (nightly-main)	3m 2s
Soundness / Broken symlinks check	3s
Soundness / Documentation check	1m 20s
Soundness / Format check	40s
Soundness / License headers check	3s
Soundness / Python lint check	4s
Soundness / Shell check	30s
Soundness / Unacceptable language check	3s
Soundness / YAML lint check	4s
Unit tests / Unit tests / Linux (6.0)	1m 24s
Unit tests / Unit tests / Linux (nightly-6.0)	1m 40s
Unit tests / Unit tests / Linux (nightly-main)	1m 39s
Cxx interop / Cxx interop / Linux (6.0)	1m 0s
Benchmarks / Benchmarks / Linux (6.0)	2m 33s
Cxx interop / Cxx interop / Linux (nightly-6.0)	58s
Benchmarks / Benchmarks / Linux (nightly-6.0)	3m 5s
Cxx interop / Cxx interop / Linux (nightly-main)	1m 5s
Benchmarks / Benchmarks / Linux (nightly-main)	2m 44s
	32m 2s

Provide feedback