New: Include APFS disks in disk space

Closes #2261

src/NzbDrone.Mono/Disk/DiskProvider.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -81,8 +81,8 @@ namespace NzbDrone.Mono.Disk
                                      .Concat(GetDriveInfoMounts()
                                                  .Select(d => new DriveInfoMount(d, FindDriveType.Find(d.DriveFormat)))
                                                  .Where(d => d.DriveType == DriveType.Fixed ||
-                                                             d.DriveType == DriveType.Network || d.DriveType ==
+                                                             d.DriveType == DriveType.Network ||
-                                                             DriveType.Removable))
+                                                             d.DriveType == DriveType.Removable))
                                      .DistinctBy(v => v.RootDirectory)
                                      .ToList();
         }

src/NzbDrone.Mono/Disk/FindDriveType.cs

@@ -1,4 +1,4 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.IO;
 using NzbDrone.Common.Extensions;
 
@@ -9,6 +9,7 @@ namespace NzbDrone.Mono.Disk
         private static readonly Dictionary<string, DriveType> DriveTypeMap = new Dictionary<string, DriveType>
                                                                                   {
                                                                                       { "afpfs", DriveType.Network },
+                                                                                      { "apfs", DriveType.Fixed },
                                                                                       { "zfs", DriveType.Fixed }
                                                                                   };