feat: free the name of the task when it is ended

kernel/tasks/task.c

@@ -302,6 +302,7 @@ task_t *task_create(task_entrypoint entrypoint, void *entry_data, char *name) {
 
 void task_free(task_t *task) {
     pmm_free_pages(task->stack, 16);
+    free(task->name);
     free(task);
 }