[K/N][Tests] Move filecheck and cinterop tests to /native/

^KT-61259

native/native.tests/testData/codegen/fileCheck/smoke0.kt

@@ -0,0 +1,18 @@
+// TARGET_BACKEND: NATIVE
+// FILECHECK_STAGE: CStubs
+
+// CHECK-LABEL: "kfun:#id(kotlin.Any?){}kotlin.Any?"
+fun id(a: Any?): Any? {
+    return a
+// CHECK-LABEL: epilogue:
+}
+
+// CHECK-LABEL: define %struct.ObjHeader* @"kfun:#box(){}kotlin.String"
+fun box(): String {
+    // CHECK: call %struct.ObjHeader* @"kfun:#id(kotlin.Any?){}kotlin.Any?"
+    val x = id("Hello")
+    // CHECK: call void @"kfun:kotlin.io#println(kotlin.Any?){}"(%struct.ObjHeader* {{.*}})
+    println(x)
+// CHECK-LABEL: epilogue:
+    return "OK"
+}