Revert "Native lib loading refactor (eclipse-zenoh#250)"

This reverts commit c8fede9.

zenoh-kotlin/src/jvmMain/kotlin/io/zenoh/Zenoh.kt

@@ -108,7 +108,7 @@ internal actual object ZenohLoad {
     }
 
     private fun loadLibraryAsInputStream(target: Target): Result<InputStream> = runCatching {
-        val libUrl = javaClass.getResourceAsStream("$target/$target.zip")!!
+        val libUrl = ClassLoader.getSystemClassLoader().getResourceAsStream("$target/$target.zip")!!
         val uncompressedLibFile = unzipLibrary(libUrl)
         return Result.success(FileInputStream(uncompressedLibFile.getOrThrow()))
     }