add signal api

src/multitasking/task.c

@@ -49,6 +49,9 @@ struct task *create_task(uint8_t uid)
 	new_task->next = current_task->next;
 	new_task->prev = current_task;
 	current_task->next = new_task;
+
+	new_task->signals.pending = SIG_IGN;
+
 	return new_task;
 }
 
@@ -64,6 +67,7 @@ int8_t create_kernel_task(void)
 	new_task->cr3 = (uint32_t *)((uint32_t)kernel_pd - HEAP_END);
 	new_task->prev = new_task;
 	new_task->next = new_task;
+	new_task->signals.pending = SIG_IGN;
 	current_task = new_task;
 	return 0;
 }