LockService, RequestId, ConnectionId, BidButtonDisabled; improvements, fixes, etc...

Mango.Nop.Services/IMgLockService.cs

@@ -0,0 +1,6 @@
+namespace Mango.Nop.Services;
+
+public interface IMgLockService
+{
+    SemaphoreSlim SemaphoreSlim { get; }
+}

Mango.Nop.Services/MgLockService.cs

@@ -0,0 +1,15 @@
+namespace Mango.Nop.Services;
+
+public abstract class MgLockService : IMgLockService
+{
+    public SemaphoreSlim SemaphoreSlim { get; protected init; }
+
+    protected MgLockService() : this(new SemaphoreSlim(1))
+    {
+    }
+
+    protected MgLockService(SemaphoreSlim semaphoreSlim)
+    {
+        SemaphoreSlim = semaphoreSlim;
+    }
+}