Auto: twincat-1.2 — native UA TIME/DATE/DT/TOD

IEC 61131-3 TIME/TOD now surface as TimeSpan (UA Duration); DATE/DT
surface as DateTime (UTC). The wire form stays UDINT — AdsTwinCATClient
post-processes raw values in ReadValueAsync and OnAdsNotificationEx,
and accepts native CLR types in ConvertForWrite. Added Duration to
DriverDataType (back-compat: existing switches default to BaseDataType
for unknown enum values) and mapped it to DataTypeIds.Duration in
DriverNodeManager.

Closes #306

src/ZB.MOM.WW.OtOpcUa.Core.Abstractions/DriverDataType.cs

@@ -25,4 +25,11 @@ public enum DriverDataType
 
     /// <summary>Galaxy-style attribute reference encoded as an OPC UA String.</summary>
     Reference,
+
+    /// <summary>
+    ///     OPC UA <c>Duration</c> — a Double-encoded period in milliseconds. Subtype of Double
+    ///     in the address space; surfaced as <see cref="System.TimeSpan"/> in the driver layer.
+    ///     Used by IEC 61131-3 <c>TIME</c> / <c>TOD</c> attributes (TwinCAT et al.).
+    /// </summary>
+    Duration,
 }