Kernel/SysFS: Migrate components code from SysFS.cpp to the SysFS folder

Kernel/FileSystem/SysFS/Registry.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <Kernel/FileSystem/FileSystem.h>
+#include <Kernel/FileSystem/Inode.h>
+#include <Kernel/FileSystem/SysFS/Component.h>
+#include <Kernel/FileSystem/SysFS/RootDirectory.h>
+#include <Kernel/FileSystem/SysFS/Subsystems/Devices/DeviceComponent.h>
+#include <Kernel/Locking/MutexProtected.h>
+
+namespace Kernel {
+
+class SysFSComponentRegistry {
+    using DevicesList = MutexProtected<IntrusiveList<&SysFSDeviceComponent::m_list_node>>;
+
+public:
+    static SysFSComponentRegistry& the();
+
+    static void initialize();
+
+    SysFSComponentRegistry();
+    void register_new_component(SysFSComponent&);
+
+    SysFSDirectory& root_directory() { return m_root_directory; }
+    Mutex& get_lock() { return m_lock; }
+
+    void register_new_bus_directory(SysFSDirectory&);
+    SysFSBusDirectory& buses_directory();
+
+    DevicesList& devices_list();
+
+private:
+    Mutex m_lock;
+    NonnullRefPtr<SysFSRootDirectory> m_root_directory;
+    DevicesList m_devices_list;
+};
+
+}