Initial Up Banking Home Assistant integration

custom_components/up_banking/translations/en.json

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+{"config":{"step":{"user":{"title":"Connect to Up Banking","description":"Enter an Up personal access token. It is stored by Home Assistant and never written to logs.","data":{"token":"Personal access token"}},"accounts":{"title":"Choose accounts","description":"Only selected accounts receive balance entities.","data":{"accounts":"Accounts"}}},"error":{"cannot_connect":"Could not connect or the token was rejected."}},"options":{"step":{"init":{"title":"Choose accounts","data":{"accounts":"Accounts"}}}}}