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/fuse_sdcard_install.h b/fuse_sdcard_install.h
index 5f0d64a..345aea4 100644
--- a/fuse_sdcard_install.h
+++ b/fuse_sdcard_install.h
@@ -16,7 +16,7 @@
 
 #pragma once
 
-#include "device.h"
-#include "ui.h"
+#include "recovery_ui/device.h"
+#include "recovery_ui/ui.h"
 
 int ApplyFromSdcard(Device* device, bool* wipe_cache, RecoveryUI* ui);