Introduce docc documentation and "supported features" #745

Job	Run time
Test (Java) (jammy swift:6.1.2 jdk:corretto)	2m 47s
Benchmark (JMH) (jammy swift:6.1.2 jdk:corretto)	7m 47s
Test (Java) (macos swift:6.1.2 jdk:corretto)	3m 43s
Test (Swift) (jammy swift:6.1.2 jdk:corretto)	5m 42s
Test (Swift) (macos swift:6.1.2 jdk:corretto)	2m 21s
Sample JavaKitSampleApp (macos swift:6.1.2 jdk:corretto)	6m 32s
Sample JavaDependencySampleApp (macos swift:6.1.2 jdk:corretto)	6m 38s
Sample JavaProbablyPrime (macos swift:6.1.2 jdk:corretto)	5m 47s
Sample JavaSieve (macos swift:6.1.2 jdk:corretto)	3m 49s
Sample SwiftAndJavaJarSampleLib (macos swift:6.1.2 jdk:corretto)	3m 34s
Sample JExtractJNISampleApp (macos swift:6.1.2 jdk:corretto)	5m 56s
Sample JavaDependencySampleApp (jammy swift:6.1.2 jdk:corretto)	6m 38s
Sample JavaProbablyPrime (jammy swift:6.1.2 jdk:corretto)	4m 38s
Sample SwiftKitSampleApp (macos swift:6.1.2 jdk:corretto)	5m 44s
Sample SwiftAndJavaJarSampleLib (jammy swift:6.1.2 jdk:corretto)	5m 7s
Sample SwiftKitSampleApp (jammy swift:6.1.2 jdk:corretto)	5m 31s
Sample JExtractJNISampleApp (jammy swift:6.1.2 jdk:corretto)	5m 36s
Sample JavaSieve (jammy swift:6.1.2 jdk:corretto)	2m 1s
Sample JavaKitSampleApp (jammy swift:6.1.2 jdk:corretto)	4m 42s
soundness / Documentation check	47s
soundness / API breakage check	0s
soundness / YAML lint check	4s
soundness / Python lint check	8s
soundness / Unacceptable language check	6s
soundness / License headers check	7s
soundness / Broken symlinks check	8s
soundness / Shell check	31s
soundness / Format check	0s
	1h 36m 24s

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