Revert "削除"

This reverts commit 056c50f9b7971fe599b5df0837e7bb28d9798f20.
Revert "Revert "削除""

This reverts commit f07758a6e9247a2af3964831ff46e720bf27b807.
単体テスト_例外処理、保存を追加
・EnemyGenerator、InputManager