feat: setup structure for block devices

added ide block device
added mbr block device driver
started fat block device driver

reordered boot
start timer before pci/ide/etc.
enable interrupts earlier

fixed exception from ide controller

cleanup code
more printfs

kernel/libc/kprintf.h

@@ -5,6 +5,8 @@
 #ifndef NEW_KERNEL_KPRINTF_H
 #define NEW_KERNEL_KPRINTF_H
 
-void printf(const char *fmt, ...);
+int printf(const char *fmt, ...);
+
+int sprintf(char *target, const char *fmt, ...);
 
 #endif //NEW_KERNEL_KPRINTF_H