insert native lib into jar

cmd/plt-build/build.gradle.kts

@@ -29,6 +29,11 @@ dependencies {
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:${kotlinCoroutinesVersion}")
 }
 
+sourceSets.main {
+    resources {
+        srcDirs("src/main/resources", "build/natives")
+    }
+}
 kotlin {
     jvmToolchain(24)
 }
@@ -36,4 +41,12 @@ kotlin {
 tasks.test {
     useJUnitPlatform()
 }
-project.layout.buildDirectory.set(file("../../build"))
+tasks.register<Exec>("compileNativeLib") {
+    val java_home = System.getProperty("java.home")
+    environment("CGO_CFLAGS" to "-I$java_home/include -I$java_home/include/linux")
+    workingDir("src/main/go")
+    commandLine("go", "build", "-linkshared", "-buildmode=c-shared", "-o", layout.buildDirectory.get().dir("natives").file("pltbuild.so"))
+}
+tasks.processResources {
+    dependsOn += "compileNativeLib"
+}