Auto: focas-f1a — ODBST status flags as fixed-tree nodes

Closes #257

src/ZB.MOM.WW.OtOpcUa.Driver.FOCAS/FwlibFocasClient.cs

@@ -137,6 +137,24 @@ internal sealed class FwlibFocasClient : IFocasClient
         return Task.FromResult(ret == 0);
     }
 
+    public Task<FocasStatusInfo?> GetStatusAsync(CancellationToken cancellationToken)
+    {
+        if (!_connected) return Task.FromResult<FocasStatusInfo?>(null);
+        var buf = new FwlibNative.ODBST();
+        var ret = FwlibNative.StatInfo(_handle, ref buf);
+        if (ret != 0) return Task.FromResult<FocasStatusInfo?>(null);
+        return Task.FromResult<FocasStatusInfo?>(new FocasStatusInfo(
+            Dummy: buf.Dummy,
+            Tmmode: buf.TmMode,
+            Aut: buf.Aut,
+            Run: buf.Run,
+            Motion: buf.Motion,
+            Mstb: buf.Mstb,
+            EmergencyStop: buf.Emergency,
+            Alarm: buf.Alarm,
+            Edit: buf.Edit));
+    }
+
     // ---- PMC ----
 
     private (object? value, uint status) ReadPmc(FocasAddress address, FocasDataType type)