feat: add analytics and unknown useragents

app/Entities/AnalyticsPodcastsByCountry.php

app/Entities/AnalyticsPodcastsByPlayer.php

app/Entities/AnalyticsUnknownUseragents.php

app/Entities/AnalyticsWebsiteByBrowser.php

app/Entities/AnalyticsWebsiteByCountry.php

app/Entities/AnalyticsWebsiteByReferer.php

app/Language/en/Countries.php

app/Language/fr/Countries.php

app/Models/AnalyticsEpisodesByCountryModel.php

app/Models/AnalyticsEpisodesByPlayerModel.php

app/Models/AnalyticsPodcastsByCountryModel.php

app/Models/AnalyticsPodcastsByPlayerModel.php

app/Models/AnalyticsUnknownUseragentsModel.php

app/Models/AnalyticsWebsiteByBrowserModel.php

app/Models/AnalyticsWebsiteByCountryModel.php

app/Models/AnalyticsWebsiteByRefererModel.php

app/Models/UnknownUserAgentsModel.php

app/Views/errors/cli/error_exception.php

app/Views/errors/html/error_404.php

app/Views/errors/html/error_exception.php