feat(infra): add IOpcUaBridge interface and OpcUaBridge with OPC UA reconnection

infra/lmxfakeproxy/Bridge/IOpcUaBridge.cs

@@ -0,0 +1,25 @@
+namespace LmxFakeProxy.Bridge;
+
+public record OpcUaReadResult(object? Value, DateTime SourceTimestamp, uint StatusCode);
+
+public interface IOpcUaBridge : IAsyncDisposable
+{
+    bool IsConnected { get; }
+
+    Task ConnectAsync(CancellationToken cancellationToken = default);
+
+    Task<OpcUaReadResult> ReadAsync(string nodeId, CancellationToken cancellationToken = default);
+
+    Task<uint> WriteAsync(string nodeId, object? value, CancellationToken cancellationToken = default);
+
+    Task<string> AddMonitoredItemsAsync(
+        IEnumerable<string> nodeIds,
+        int samplingIntervalMs,
+        Action<string, object?, DateTime, uint> onValueChanged,
+        CancellationToken cancellationToken = default);
+
+    Task RemoveMonitoredItemsAsync(string handle, CancellationToken cancellationToken = default);
+
+    event Action? Disconnected;
+    event Action? Reconnected;
+}