add m3u codec hints for channels app (#48)

ErsatzTV.Core/Iptv/ChannelPlaylist.cs

@@ -45,8 +45,11 @@ namespace ErsatzTV.Core.Iptv
                     _ => "ts"
                 };
 
+                string vcodec = channel.FFmpegProfile.VideoCodec.Split("_").Head();
+                string acodec = channel.FFmpegProfile.AudioCodec;
+
                 sb.AppendLine(
-                    $"#EXTINF:0 tvg-id=\"{channel.Number}\" channel-id=\"{shortUniqueId}\" channel-number=\"{channel.Number}\" CUID=\"{shortUniqueId}\" tvg-chno=\"{channel.Number}\" tvg-name=\"{channel.Name}\" tvg-logo=\"{logo}\" group-title=\"ErsatzTV\", {channel.Name}");
+                    $"#EXTINF:0 tvg-id=\"{channel.Number}\" channel-id=\"{shortUniqueId}\" channel-number=\"{channel.Number}\" CUID=\"{shortUniqueId}\" tvg-chno=\"{channel.Number}\" tvg-name=\"{channel.Name}\" tvg-logo=\"{logo}\" group-title=\"ErsatzTV\" tvc-stream-vcodec=\"{vcodec}\" tvc-stream-acodec=\"{acodec}\", {channel.Name}");
                 sb.AppendLine($"{_scheme}://{_host}/iptv/channel/{channel.Number}.{format}");
             }
 

ErsatzTV.Infrastructure/Data/Repositories/ChannelRepository.cs

@@ -39,6 +39,7 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
 
         public Task<List<Channel>> GetAll() =>
             _dbContext.Channels
+                .Include(c => c.FFmpegProfile)
                 .Include(c => c.Artwork)
                 .ToListAsync();