added some useless shell commands

kernel/kbd.h

@@ -1,6 +1,9 @@
 #pragma once 
 
-char kbd_read();
+#include <stdint.h>
+#include <vfs.h>
+
+uint32_t kbd_read(struct vfs_node* node, uint32_t offset, uint32_t size, uint8_t* buffer);
 void kbd_push(char c);
 int kbd_ready();
 void kbd_wait();