backend/tests: Add blackbox tests from Kotlin JVM

Added tests from testData/codegen/box directory. There are blackbox tests
in other directories and they are to be added.

backend.native/tests/external/codegen/blackbox/builtinStubMethods/Map.kt

@@ -0,0 +1,34 @@
+// TODO: muted automatically, investigate should it be ran for JS or not
+// IGNORE_BACKEND: JS
+
+class MyMap<K, V>: Map<K, V> {
+    override val size: Int get() = 0
+    override fun isEmpty(): Boolean = true
+    override fun containsKey(key: K): Boolean = false
+    override fun containsValue(value: V): Boolean = false
+    override fun get(key: K): V? = null
+    override val keys: Set<K> get() = throw UnsupportedOperationException()
+    override val values: Collection<V> get() = throw UnsupportedOperationException()
+    override val entries: Set<Map.Entry<K, V>> get() = throw UnsupportedOperationException()
+}
+
+fun expectUoe(block: () -> Unit) {
+    try {
+        block()
+        throw AssertionError()
+    } catch (e: UnsupportedOperationException) {
+    }
+}
+
+fun box(): String {
+    val myMap = MyMap<String, Int>()
+    val map = myMap as java.util.Map<String, Int>
+
+    expectUoe { map.put("", 1) }
+    expectUoe { map.remove("") }
+    expectUoe { map.putAll(myMap) }
+    expectUoe { map.clear() }
+
+    return "OK"
+}
+