Reduce implicit null checks

SabreTools.Models/ClrMamePro/GameBase.cs

@@ -60,7 +60,7 @@ namespace SabreTools.Models.ClrMamePro
         public Chip[]? Chip { get; set; }
 
         /// <remarks>video, Appears after Chip</remarks>
-        public Video? Video { get; set; }
+        public Video[]? Video { get; set; }
 
         /// <remarks>sound, Appears after Video</remarks>
         public Sound? Sound { get; set; }

SabreTools.Models/Internal/Machine.cs

@@ -61,6 +61,9 @@ namespace SabreTools.Models.Internal
         /// <remarks>DipSwitch[]</remarks>
         public const string DipSwitchKey = "dipswitch";
 
+        /// <remarks>string</remarks>
+        public const string DirNameKey = "dirName";
+
         /// <remarks>Disk[]</remarks>
         public const string DiskKey = "disk";
 
@@ -73,7 +76,7 @@ namespace SabreTools.Models.Internal
         /// <remarks>string</remarks>
         public const string DisplayTypeKey = "displaytype";
 
-        /// <remarks>Driver, Driver[]</remarks>
+        /// <remarks>Driver</remarks>
         public const string DriverKey = "driver";
 
         /// <remarks>Dump[]</remarks>
@@ -230,7 +233,7 @@ namespace SabreTools.Models.Internal
         /// <remarks>Trurip</remarks>
         public const string TruripKey = "trurip";
 
-        /// <remarks>Video, Video[]</remarks>
+        /// <remarks>Video[]</remarks>
         public const string VideoKey = "video";
 
         /// <remarks>string</remarks>

SabreTools.Models/Logiqx/GameBase.cs

@@ -102,10 +102,9 @@ namespace SabreTools.Models.Logiqx
         [XmlElement("archive")]
         public Archive[]? Archive { get; set; }
 
-        /// TODO: Validate multiple can exist
         /// <remarks>MAME extension</remarks>
         [XmlElement("driver")]
-        public Driver[]? Driver { get; set; }
+        public Driver? Driver { get; set; }
 
         /// <remarks>MAME extension</remarks>
         [XmlElement("softwarelist")]