Sort embedded collections in Nfo files

Because the Nfo files emit the collections as they are in-memory, the
files are not stable in format, genres, tags, albums, people, etc. are emitted in random orders. Add ordering of the collections when emitting the Nfo files so the file remains stable (unchanged) when underlying media information doesn't change.

In the process of this, it became clear that most of the providers and probes don't trim the strings like people's names, genre names, etc. so did a pass of Trim cleanup too.

Specific ordering: (alphabetical/numeric ascending after trimming blanks and defaulting to zero for missing numbers)

BaseItem: Directors, Writers, Trailers (by Url), Production Locations, Genres, Studios, Tags, Custom Provider Data (by key), Linked Children  (by Path>LibraryItemId), Backdrop Images (by path), Actors (by SortOrder>Name)

AlbumNfo: Artists, Album Artists, Tracks (by ParentIndexNumber>IndexNumber>Name)

ArtistNfo: Albums (by Production Year>SortName>Name)

MovieNfo: Artists

Fix Debug build lint


Fix CI debug build lint issue.


Fix review issues

Fixed debug-build lint issues.
Emits the `disc` number to NFO for tracks with a non-zero ParentIndexNumber and only emit `position` if non-zero.
Removed the exception filtering I put in for testing.

Don't emit actors for MusicAlbums or MusicArtists


Swap from String.Trimmed() to ?.Trim()
Addressing PR feedback

Can't use ReadOnlySpan in an async method

Removed now-unused namespace

MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs

@@ -10,7 +10,9 @@ using System.Text.RegularExpressions;
 using System.Xml;
 using Jellyfin.Data.Enums;
 using Jellyfin.Extensions;
+using MediaBrowser.Controller.Extensions;
 using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Sorting;
 using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Globalization;
@@ -531,42 +533,44 @@ namespace MediaBrowser.MediaEncoding.Probing
         private void ProcessPairs(string key, List<NameValuePair> pairs, MediaInfo info)
         {
             List<BaseItemPerson> peoples = new List<BaseItemPerson>();
+            var distinctPairs = pairs.Select(p => p.Value)
+                    .Where(i => !string.IsNullOrWhiteSpace(i))
+                    .Trimmed()
+                    .Distinct(StringComparer.OrdinalIgnoreCase);
+
             if (string.Equals(key, "studio", StringComparison.OrdinalIgnoreCase))
             {
-                info.Studios = pairs.Select(p => p.Value)
-                    .Where(i => !string.IsNullOrWhiteSpace(i))
-                    .Distinct(StringComparer.OrdinalIgnoreCase)
-                    .ToArray();
+                info.Studios = distinctPairs.ToArray();
             }
             else if (string.Equals(key, "screenwriters", StringComparison.OrdinalIgnoreCase))
             {
-                foreach (var pair in pairs)
+                foreach (var pair in distinctPairs)
                 {
                     peoples.Add(new BaseItemPerson
                     {
-                        Name = pair.Value,
+                        Name = pair,
                         Type = PersonKind.Writer
                     });
                 }
             }
             else if (string.Equals(key, "producers", StringComparison.OrdinalIgnoreCase))
             {
-                foreach (var pair in pairs)
+                foreach (var pair in distinctPairs)
                 {
                     peoples.Add(new BaseItemPerson
                     {
-                        Name = pair.Value,
+                        Name = pair,
                         Type = PersonKind.Producer
                     });
                 }
             }
             else if (string.Equals(key, "directors", StringComparison.OrdinalIgnoreCase))
             {
-                foreach (var pair in pairs)
+                foreach (var pair in distinctPairs)
                 {
                     peoples.Add(new BaseItemPerson
                     {
-                        Name = pair.Value,
+                        Name = pair,
                         Type = PersonKind.Director
                     });
                 }
@@ -591,10 +595,10 @@ namespace MediaBrowser.MediaEncoding.Probing
                     switch (reader.Name)
                     {
                         case "key":
-                            name = reader.ReadElementContentAsString();
+                            name = reader.ReadNormalizedString();
                             break;
                         case "string":
-                            value = reader.ReadElementContentAsString();
+                            value = reader.ReadNormalizedString();
                             break;
                         default:
                             reader.Skip();
@@ -607,8 +611,8 @@ namespace MediaBrowser.MediaEncoding.Probing
                 }
             }
 
-            if (string.IsNullOrWhiteSpace(name)
-                || string.IsNullOrWhiteSpace(value))
+            if (string.IsNullOrEmpty(name)
+                || string.IsNullOrEmpty(value))
             {
                 return null;
             }
@@ -1453,7 +1457,7 @@ namespace MediaBrowser.MediaEncoding.Probing
             var genres = new List<string>(info.Genres);
             foreach (var genre in Split(genreVal, true))
             {
-                if (string.IsNullOrWhiteSpace(genre))
+                if (string.IsNullOrEmpty(genre))
                 {
                     continue;
                 }