Add missing baseline forecast

[kathsherratt]

1 week ago the baseline was created and PR'd as normal - this was then overwritten by a force-push to the branch in this week's update. This pr recovers the original file (here).

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fc <- read_csv("https://raw.githubusercontent.com/covid19-forecast-hub-europe/covid19-forecast-hub-europe/0dc0aaeec596c041578352ea22011391c83d2229/data-processed/EuroCOVIDhub-baseline/2022-12-26-EuroCOVIDhub-baseline.csv")
write_csv(fc, 
          here("data-processed", "EuroCOVIDhub-baseline", 
               "2022-12-26-EuroCOVIDhub-baseline.csv"))

[github-actions]

Preview of submitted forecast:

https://forecasthub.shinyapps.io/covid19-forecast-hub-europe//?file=https://github.com/covid19-forecast-hub-europe/covid19-forecast-hub-europe/raw/bc30228eec77935a539c6e31a99f196b44c81444/data-processed/EuroCOVIDhub-baseline/2022-12-26-EuroCOVIDhub-baseline.csv