Modify offline mode to include caching on server connection failure

This will likely require a complete refactor of offline mode. We want to now include caching of objects such that if a connection cannot be made to the server, these objects are uploaded at a later time. This can be merged with the offline mode concept, the difference being offline mode would be clearly stating that connection to a server is not possible, whereas a typical run would keep re-trying to upload the runs at a given interval.

This could be merged with the concept of having object orientation for Simvue objects and their storage locally.

ファイルやテストは指定されていません。まず、既存のオフラインモードの実装と Simvue のオブジェクトストレージパスを特定し、次に run のアップロード方法と接続失敗の処理方法を追跡してください。接続に失敗した場合にオブジェクトを後でアップロードできるようキャッシュし、定義された間隔で再試行し、通常の再試行と明示的にオフラインモードにした場合を区別できれば完了です。