Kernel: Make self-contained locking smart pointers their own classes

Until now, our kernel has reimplemented a number of AK classes to
provide automatic internal locking:

- RefPtr
- NonnullRefPtr
- WeakPtr
- Weakable

This patch renames the Kernel classes so that they can coexist with
the original AK classes:

- RefPtr => LockRefPtr
- NonnullRefPtr => NonnullLockRefPtr
- WeakPtr => LockWeakPtr
- Weakable => LockWeakable

The goal here is to eventually get rid of the Lock* classes in favor of
using external locking.

Kernel/Arch/aarch64/InterruptManagement.h

@@ -6,9 +6,9 @@
 
 #pragma once
 
-#include <AK/RefPtr.h>
 #include <AK/Vector.h>
 #include <Kernel/Arch/aarch64/IRQController.h>
+#include <Kernel/Library/LockRefPtr.h>
 
 namespace Kernel {
 
@@ -20,14 +20,14 @@ public:
 
     static u8 acquire_mapped_interrupt_number(u8 original_irq);
 
-    Vector<RefPtr<IRQController>> const& controllers();
-    RefPtr<IRQController> get_responsible_irq_controller(u8 interrupt_vector);
+    Vector<LockRefPtr<IRQController>> const& controllers();
+    LockRefPtr<IRQController> get_responsible_irq_controller(u8 interrupt_vector);
 
 private:
     InterruptManagement() = default;
     void find_controllers();
 
-    Vector<RefPtr<IRQController>> m_interrupt_controllers;
+    Vector<LockRefPtr<IRQController>> m_interrupt_controllers;
 };
 
 }