[K/N] Move kotlin.native.internal.Cleaner to kotlin.native.ref.Cleaner

As a part of efforts to stabilize Native stdlib #KT-55765.


Co-authored-by: Alexander Shabalin <Alexander.Shabalin@jetbrains.com>
Co-authored-by: Ilya Gorbunov <Ilya.Gorbunov@jetbrains.com>

Merge-request: KT-MR-9347
Merged-by: Abduqodiri Qurbonzoda <abduqodiri.qurbonzoda@jetbrains.com>

kotlin-native/backend.native/tests/runtime/basic/cleaner_basic.kt

@@ -11,6 +11,8 @@ import kotlin.test.*
 import kotlin.native.internal.*
 import kotlin.native.concurrent.*
 import kotlin.native.ref.WeakReference
+import kotlin.native.ref.Cleaner
+import kotlin.native.ref.createCleaner
 
 class AtomicBoolean(initialValue: Boolean) {
     private val impl = AtomicInt(if (initialValue) 1 else 0)