Auto: ablegacy-7 — array contiguous block addressing

Closes #250

src/ZB.MOM.WW.OtOpcUa.Driver.AbLegacy/AbLegacyDriverFactoryExtensions.cs

@@ -51,7 +51,8 @@ public static class AbLegacyDriverFactoryExtensions
                     DataType: ParseEnum<AbLegacyDataType>(t.DataType, driverInstanceId, "DataType",
                         tagName: t.Name),
                     Writable: t.Writable ?? true,
-                    WriteIdempotent: t.WriteIdempotent ?? false))]
+                    WriteIdempotent: t.WriteIdempotent ?? false,
+                    ArrayLength: t.ArrayLength))]
                 : [],
             Probe = new AbLegacyProbeOptions
             {
@@ -112,6 +113,11 @@ public static class AbLegacyDriverFactoryExtensions
         public string? DataType { get; init; }
         public bool? Writable { get; init; }
         public bool? WriteIdempotent { get; init; }
+        /// <summary>
+        ///     PR 7 — optional override for the parsed array suffix. When set and &gt; 1 the
+        ///     driver issues a single contiguous PCCC block read for N elements.
+        /// </summary>
+        public int? ArrayLength { get; init; }
     }
 
     internal sealed class AbLegacyProbeDto