Kernel: Move InterruptDisabler out of Arch directory

The code in this file is not architecture specific, so it can be moved
to the base Kernel directory.

Kernel/InterruptDisabler.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2022, Timon Kruiper <timonkruiper@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Types.h>
+#include <Kernel/Arch/Processor.h>
+
+namespace Kernel {
+
+class InterruptDisabler {
+public:
+    InterruptDisabler()
+        : m_interrupts_were_enabled(Processor::are_interrupts_enabled())
+    {
+        Processor::disable_interrupts();
+    }
+
+    ~InterruptDisabler()
+    {
+        if (m_interrupts_were_enabled)
+            Processor::enable_interrupts();
+    }
+
+private:
+    bool m_interrupts_were_enabled;
+};
+
+}