Add JExtract JNI sample app #653

Job	Run time
Java tests (swift:6.1.2 jdk:Corretto os:jammy)	4m 14s
Swift tests (swift:6.1.2 jdk:Corretto os:jammy)	4m 52s
Verify Sample JavaDependencySampleApp (swift:6.1.2 jdk:Corretto os:jammy)	5m 39s
Verify Sample JavaKitSampleApp (swift:6.1.2 jdk:Corretto os:jammy)	3m 53s
Verify Sample JavaProbablyPrime (swift:6.1.2 jdk:Corretto os:jammy)	3m 24s
Verify Sample JExtractJNISampleApp (swift:6.1.2 jdk:Corretto os:jammy)	4m 4s
Verify Sample JavaSieve (swift:6.1.2 jdk:Corretto os:jammy)	1m 5s
Verify Sample SwiftAndJavaJarSampleLib (swift:6.1.2 jdk:Corretto os:jammy)	3m 56s
Verify Sample SwiftKitSampleApp (swift:6.1.2 jdk:Corretto os:jammy)	4m 1s
soundness / Unacceptable language check	4s
soundness / Documentation check	36s
soundness / License headers check	7s
soundness / Shell check	37s
soundness / Python lint check	7s
soundness / Broken symlinks check	3s
soundness / YAML lint check	5s
soundness / API breakage check	0s
soundness / Format check	0s
	36m 47s

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