* Introduce SnapTrade integration with models, migrations, views, and activity processing logic.
* Refactor SnapTrade activities processing: improve activity fetching flow, handle pending states, and update UI elements for enhanced user feedback.
* Update Brakeman ignore file to include intentional redirect for SnapTrade OAuth portal.
* Refactor SnapTrade models, views, and processing logic: add currency extraction helper, improve pending state handling, optimize migration checks, and enhance user feedback in UI.
* Remove encryption for SnapTrade `snaptrade_user_id`, as it is an identifier, not a secret.
* Introduce `SnaptradeConnectionCleanupJob` to asynchronously handle SnapTrade connection cleanup and improve i18n for SnapTrade item status messages.
* Update SnapTrade encryption: make `snaptrade_user_secret` non-deterministic to enhance security.
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Signed-off-by: Juan José Mata <juanjo.mata@gmail.com>
Co-authored-by: luckyPipewrench <luckypipewrench@proton.me>
Co-authored-by: Juan José Mata <juanjo.mata@gmail.com>
