basic apic + fix some stupid issues

created an initial stub implementation of the apic driver, added the madt to acpi, fixed an issue with the strncmp, made the pmm set only free pages rather than used ones

src/arch/x86_64/main.c

@@ -9,6 +9,9 @@
 #include <arch/panic.h>
 #include <kernel/vfs.h>
 #include <arch/acpi.h>
+#include <arch/apic.h>
+#include <kernel/initrd.h>
+#include <stdio.h>
 
 static volatile struct limine_terminal_request liminettyr = {
     .id = LIMINE_TERMINAL_REQUEST,
@@ -38,10 +41,6 @@ void kmain(){
 	
 	pmm_init();
 	
-	//set from 0xA0000 to 0x100000 as used
-	//as sometimes the bootloader doesn't pass this region as being used
-
-	pmm_setused((void*)0xA0000, 0x60);
 	
 	arch_mmu_init();
 	
@@ -59,6 +58,8 @@ void kmain(){
 	initrd_parse();
 	
 	acpi_init();
+	
+	apic_init();
 
 	_panic("End of kmain()", 0);