feat(idt): add load_idt instructions

k/idt.c

@@ -0,0 +1,20 @@
+#include "idt.h"
+
+static struct idt idt = { 0 };
+
+static void load_idt()
+{
+    struct idt_r idtr;
+    idtr.addr = (uint32_t)&idt;
+    idtr.limit = IDT_SIZE - 1;
+
+    asm volatile("lidt %0\n"
+                 :
+                 : "m" (idtr)
+                 : "memory");
+}
+
+void init_idt()
+{
+    load_idt();
+}