Introduce docc documentation and "supported features" #746

Job	Run time
Benchmark (JMH) (jammy swift:6.1.2 jdk:corretto)	7m 28s
Test (Java) (macos swift:6.1.2 jdk:corretto)	2m 51s
Test (Java) (jammy swift:6.1.2 jdk:corretto)	2m 46s
Test (Swift) (jammy swift:6.1.2 jdk:corretto)	6m 4s
Sample JavaKitSampleApp (jammy swift:6.1.2 jdk:corretto)	4m 56s
Test (Swift) (macos swift:6.1.2 jdk:corretto)	4m 53s
Sample JavaSieve (jammy swift:6.1.2 jdk:corretto)	2m 2s
Sample JavaKitSampleApp (macos swift:6.1.2 jdk:corretto)	5m 28s
Sample JavaProbablyPrime (jammy swift:6.1.2 jdk:corretto)	4m 34s
Sample JavaDependencySampleApp (jammy swift:6.1.2 jdk:corretto)	6m 18s
Sample JavaDependencySampleApp (macos swift:6.1.2 jdk:corretto)	8m 31s
Sample SwiftAndJavaJarSampleLib (jammy swift:6.1.2 jdk:corretto)	4m 34s
Sample JExtractJNISampleApp (jammy swift:6.1.2 jdk:corretto)	5m 26s
Sample JavaProbablyPrime (macos swift:6.1.2 jdk:corretto)	5m 24s
Sample SwiftKitSampleApp (jammy swift:6.1.2 jdk:corretto)	5m 40s
Sample JExtractJNISampleApp (macos swift:6.1.2 jdk:corretto)	6m 4s
Sample SwiftKitSampleApp (macos swift:6.1.2 jdk:corretto)	4m 40s
Sample JavaSieve (macos swift:6.1.2 jdk:corretto)	2m 40s
Sample SwiftAndJavaJarSampleLib (macos swift:6.1.2 jdk:corretto)	5m 28s
soundness / Shell check	45s
soundness / Unacceptable language check	3s
soundness / License headers check	5s
soundness / Documentation check	38s
soundness / Broken symlinks check	6s
soundness / API breakage check	0s
soundness / YAML lint check	3s
soundness / Python lint check	8s
soundness / Format check	0s
	1h 37m 35s

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