Move librecovery_ui to a sub-directory

This helps to expose librecovery_ui for device specific RecoveryUi.

Bug: 76436783
Test: mma, unit tests pass
Change-Id: Ic6c3d301d5833e4a592e6ea9d9d059bc4e4919be
(cherry picked from commit b5108c372c8b92671ea5ebb4eeff00757fcee187)
diff --git a/recovery_ui/default_device.cpp b/recovery_ui/default_device.cpp
new file mode 100644
index 0000000..4db461a
--- /dev/null
+++ b/recovery_ui/default_device.cpp
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "recovery_ui/device.h"
+#include "recovery_ui/screen_ui.h"
+
+Device* make_device() {
+  return new Device(new ScreenRecoveryUI);
+}