Minimal device system, implement terminal device and libterminal

kernel/amd64/bootmain.c

@@ -6,6 +6,7 @@
 #include <amd64/msr-index.h>
 #include <amd64/msr.h>
 #include <aux/compiler.h>
+#include <device/device.h>
 #include <fs/vfs.h>
 #include <irq/irq.h>
 #include <libk/std.h>
@@ -45,6 +46,7 @@ void bootmain (void) {
   amd64_ioapic_init ();
   amd64_hpet_init ();
 
+  devices_init ();
   vfs_init ();
 
   vfs_create_mountpoint ("ramdisk", VFS_RAMDISKFS);