Adopt `swift-format` #94

Job	Run time
lint	29s
unit-tests / linux-unit (swift:5.8-jammy)	26s
unit-tests / api-breakage	6m 8s
unit-tests / linux-unit (swift:5.9-jammy)	26s
unit-tests / linux-unit (swift:5.10-noble)	25s
unit-tests / linux-unit (swift:6.0-noble)	5m 49s
unit-tests / macos-unit (macos-13, ~15.2)	13s
unit-tests / linux-unit (swiftlang/swift:nightly-main-jammy)	7m 9s
unit-tests / macos-unit (macos-14, latest-stable)	4m 57s
	26m 2s

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