feat: add cache cleaner

src/unlocker/cache-cleaner.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <string>
+#include <atomic>
+#include <thread>
+
+#include <seallib/log.h>
+
+class CacheCleaner
+{
+    public:
+        CacheCleaner();
+        ~CacheCleaner();
+
+        void init();
+        void shutdown();
+
+    private:
+        std::string getLocalAppDataPath();
+        void clearFolder(std::string& path);
+        void monitorLoop();
+
+        std::atomic<bool> _running;
+        std::unique_ptr<std::thread> _monitorThread;
+        std::string _cacheDir;
+
+        seallib::Logger* _log;
+};