[Voyageurs] Add a basic ps/2 keyboard driver.

sys/voyageurs/keyboard/keyboard_driver.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <glacier/container/linked_list.h>
+#include <mammoth/ipc/port_client.h>
+#include <mammoth/ipc/port_server.h>
+#include <mammoth/proc/thread.h>
+
+class KeyboardDriver {
+ public:
+  KeyboardDriver();
+  KeyboardDriver(const KeyboardDriver&) = delete;
+  KeyboardDriver(KeyboardDriver&&) = delete;
+
+  void RegisterListener(uint64_t port_cap);
+
+  Thread StartInterruptLoop();
+  void InterruptLoop();
+
+ private:
+  z_cap_t irq_cap_;
+  glcr::LinkedList<mmth::PortClient> listeners_;
+};