Adopt swift-format #148

Job	Run time
Unit tests / 5.8	3m 15s
Unit tests / 5.9	3m 21s
Unit tests / 5.10	3m 18s
Unit tests / nightly-6.0	4m 12s
Unit tests / nightly-main	4m 19s
Benchmarks / 5.8	2m 34s
Benchmarks / 5.9	3m 40s
Benchmarks / 5.10	3m 37s
Benchmarks / nightly-6.0	4m 33s
Benchmarks / nightly-main	5m 1s
Integration tests / 5.8	6m 37s
Integration tests / 5.9	6m 37s
Integration tests / 5.10	6m 39s
Integration tests / nightly-6.0	6m 37s
Integration tests / nightly-main	6m 41s
Soundness / API breakage check	2m 38s
Soundness / Broken symlinks check	6s
Soundness / Documentation check	2m 0s
Soundness / License headers check	10s
Soundness / Unacceptable language check	3s
Soundness / Format check	45s
Cxx interop / 5.8	1m 2s
Cxx interop / 5.9	1m 12s
Cxx interop / 5.10	1m 10s
Cxx interop / nightly-6.0	1m 48s
Cxx interop / nightly-main	1m 53s
	1h 23m 48s

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