Makes scheduler works at the end of the interruption

src/main.rs

@@ -12,7 +12,7 @@ use crate::{
     io::init_log,
     process::{create_processus, sleep},
     riscv::enable_supervisor_interrupt,
-    scheduler::scheduler_init,
+    scheduler::{idle, scheduler_init},
     vga::{Color, Vga},
 };
 
@@ -67,7 +67,6 @@ pub extern "C" fn supervisor_mode_entry() {
 
     create_processus(test, "proc1");
     create_processus(proc2, "proc2");
-    loop {
-        unsafe { wfi() }
-    }
+
+    idle();
 }