Introduce docc documentation and "supported features" #756

Job	Run time
Documentation check (6.1.2, jammy, corretto)	1m 3s
Test (Java) (jammy swift:6.1.2 jdk:corretto)	2m 38s
Test (Swift) (macos swift:6.1.2 jdk:corretto)	3m 21s
Benchmark (JMH) (jammy swift:6.1.2 jdk:corretto)	7m 10s
Test (Java) (macos swift:6.1.2 jdk:corretto)	3m 25s
Sample JavaSieve (jammy swift:6.1.2 jdk:corretto)	50s
Sample JavaKitSampleApp (jammy swift:6.1.2 jdk:corretto)	3m 25s
Test (Swift) (jammy swift:6.1.2 jdk:corretto)	4m 25s
Sample JavaDependencySampleApp (jammy swift:6.1.2 jdk:corretto)	4m 29s
Sample JavaProbablyPrime (jammy swift:6.1.2 jdk:corretto)	3m 21s
Sample SwiftAndJavaJarSampleLib (jammy swift:6.1.2 jdk:corretto)	4m 33s
Sample SwiftKitSampleApp (jammy swift:6.1.2 jdk:corretto)	5m 34s
Sample JExtractJNISampleApp (jammy swift:6.1.2 jdk:corretto)	5m 39s
Sample JavaDependencySampleApp (macos swift:6.1.2 jdk:corretto)	1m 11s
Sample JavaSieve (macos swift:6.1.2 jdk:corretto)	4s
Sample SwiftAndJavaJarSampleLib (macos swift:6.1.2 jdk:corretto)	1m 11s
Sample JavaKitSampleApp (macos swift:6.1.2 jdk:corretto)	3m 24s
Sample JExtractJNISampleApp (macos swift:6.1.2 jdk:corretto)	1s
Sample SwiftKitSampleApp (macos swift:6.1.2 jdk:corretto)	1s
Sample JavaProbablyPrime (macos swift:6.1.2 jdk:corretto)	15m 23s
soundness / Unacceptable language check	3s
soundness / License headers check	5s
soundness / Broken symlinks check	4s
soundness / Python lint check	8s
soundness / API breakage check	0s
soundness / YAML lint check	6s
soundness / Documentation check	0s
soundness / Shell check	33s
soundness / Format check	0s
	1h 12m 7s

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