Big code refactor, get rid of HAL entirely

kernel/kmain.c

@@ -1,7 +1,6 @@
 #include <limine.h>
 #include "kprintf.h"
 #include "banner.h"
-#include "hal/hal.h"
 #include "bootinfo/bootinfo.h"
 #include "pmm/pmm.h"
 #include "term/term.h"
@@ -15,6 +14,9 @@
 #include "randcrypto/randcrypto.h"
 #include "time/time.h"
 #include "diskpart/diskpart.h"
+#include "vmm/vmm.h"
+#include "cpu/hang.h"
+#include "cpu/gdt.h"
 
 void log_bootinfo(void) {
   char buf[100];
@@ -34,16 +36,17 @@ static volatile LIMINE_BASE_REVISION(2);
 
 void kmain(void) {
   if (LIMINE_BASE_REVISION_SUPPORTED == false) {
-    hal_hang();
+    cpu_hang();
   }
 
   bootinfo_init();
   term_init(BOOT_INFO.fb->address);
   log_bootinfo();
   log_time();
-  hal_init();
+  gdt_init();
+  intr_init();
   pmm_init();
-  hal_vmm_init();
+  vmm_init();
   randcrypto_init();
   dev_init();
   storedev_init();