Add a WIP VMM

As of now the VMM (pretty much a doubly linked list of regions) supports allocating and demand paging. still no deallocation though so if you allocate something you can't free it yet :')

src/arch/x86_64/main.c

@@ -4,6 +4,7 @@
 #include <arch/idt.h>
 #include <arch/cls.h>
 #include <kernel/pmm.h>
+#include <kernel/vmm.h>
 
 static volatile struct limine_terminal_request liminettyr = {
     .id = LIMINE_TERMINAL_REQUEST,
@@ -40,8 +41,8 @@ void kmain(){
 	
 	arch_mmu_init();
 	
-	
-	
+	vmm_init();	
+
 }