[K/N] Migrate LLDB test to blackboxtest

This change only introduces a single sample test together
with the necessary plumbing for basic LLDB testing.
Migrating the rest of the tests over and introducing more
complex interop setups will be tackled as a follow-up.

native/native.tests/testData/lldb/canInspectArrayChildren.kt

@@ -0,0 +1,8 @@
+// KIND: STANDALONE_LLDB
+// LLDB_TRACE: canInspectArrayChildren.txt
+fun main(args: Array<String>) {
+    val xs = intArrayOf(3, 5, 8)
+    return
+}
+
+data class Point(val x: Int, val y: Int)