remove some warnings

gcc was rightfully complaining about a lack of functio ndefinitions related to initialising the bsp's idt and gdt

src/arch/x86_64/include/arch/gdt.h

@@ -56,4 +56,6 @@ typedef struct{
 	sys64 ist;
 } gdt_t;
 
+void gdt_bspinit();
+
 #endif

src/arch/x86_64/main.c

@@ -1,5 +1,7 @@
 #include <limine.h>
 #include <kernel/console.h>
+#include <arch/gdt.h>
+#include <arch/idt.h>
 #include <arch/cls.h>
 
 static volatile struct limine_terminal_request liminettyr = {