feature: functional shell with help and merdella commands

TOOD: reboot, poweroff, echo, color

src/kernel.c

@@ -1,4 +1,5 @@
-#include "kprintf.h"
+#include "gdt.h"
+#include "shell.h"
 #include "terminal.h"
 
 #include <stdbool.h>
@@ -21,11 +22,6 @@ void kernel_main(void)
 	/* Initialize terminal interface */
 	terminal_initialize();
 
-	/* Newline support is left as an exercise. */
-	for (int i = 100; i; i--)
-		kprintf(0, "%d\n", i);
-	void initGdt();
-	kprintf(0, "mange ta mere avec ton argument a kprintf fdp\n");
-	while (true)
-		terminal_getkey();
+	/* initGdt(); */
+	shell_init();
 }