Add Options to disable DVR NFO and image saving

- SaveRecordingNFO and SaveRecordingImages default to true. Maintains current behavior.
- Episode.FillMissingEpisodeNumbersFromPath for live tv so external metadata can be pulled when recording starts.

Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs

@@ -1814,6 +1814,8 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                     program.AddGenre("News");
                 }
 
+                if (GetConfiguration().SaveRecordingNFO)
+                {
                     if (timer.IsProgramSeries)
                     {
                         await SaveSeriesNfoAsync(timer, seriesPath).ConfigureAwait(false);
@@ -1827,9 +1829,13 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                     {
                         await SaveVideoNfoAsync(timer, recordingPath, program, false).ConfigureAwait(false);
                     }
+                }
 
+                if (GetConfiguration().SaveRecordingImages)
+                {
                     await SaveRecordingImages(recordingPath, program).ConfigureAwait(false);
                 }
+            }
             catch (Exception ex)
             {
                 _logger.LogError(ex, "Error saving nfo");

MediaBrowser.Controller/Entities/TV/Episode.cs

@@ -320,7 +320,7 @@ namespace MediaBrowser.Controller.Entities.TV
 
             if (!IsLocked)
             {
-                if (SourceType == SourceType.Library)
+                if (SourceType == SourceType.Library || SourceType == SourceType.LiveTV)
                 {
                     try
                     {

MediaBrowser.Model/LiveTv/LiveTvOptions.cs

@@ -40,5 +40,9 @@ namespace MediaBrowser.Model.LiveTv
         public string RecordingPostProcessor { get; set; }
 
         public string RecordingPostProcessorArguments { get; set; }
+
+        public bool SaveRecordingNFO { get; set; } = true;
+
+        public bool SaveRecordingImages { get; set; } = true;
     }
 }