Add BodyQueryBehavior and register in MediatR pipeline

Introduced the `BodyQueryBehavior<TRecAction>` class, which implements the `IPipelineBehavior` interface to handle actions of type `RecActionDto`. The behavior is currently unimplemented and throws a `NotImplementedException`.

Updated the `DependencyInjection` class to register `BodyQueryBehavior<>` as an open generic pipeline behavior in MediatR. Added necessary `using` directives in both `DependencyInjection.cs` and `BodyQueryBehavior.cs` to support the new behavior.

src/ReC.Application/DependencyInjection.cs

@@ -1,6 +1,7 @@
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using ReC.Application.Common.Options;
+using ReC.Application.RecActions.Behaviors;
 using System.Reflection;
 
 namespace ReC.Application;
@@ -25,6 +26,7 @@ public static class DependencyInjection
         services.AddMediatR(cfg =>
         {
             cfg.RegisterServicesFromAssembly(Assembly.GetExecutingAssembly());
+            cfg.AddOpenBehaviors([typeof(BodyQueryBehavior<>)]);
             cfg.LicenseKey = configOpt.LuckyPennySoftwareLicenseKey;
         });
 

src/ReC.Application/RecActions/Behaviors/BodyQueryBehavior.cs

@@ -0,0 +1,15 @@
+using MediatR;
+using ReC.Application.Common.Dto;
+
+namespace ReC.Application.RecActions.Behaviors
+{
+    public class BodyQueryBehavior<TRecAction> : IPipelineBehavior<TRecAction, Unit>
+        where TRecAction : RecActionDto
+    {
+        public Task<Unit> Handle(TRecAction action, RequestHandlerDelegate<Unit> next, CancellationToken cancel)
+        {
+            // Logic to process the body query can be added here
+            throw new NotImplementedException("BodyQueryBehavior is not implemented yet.");
+        }
+    }
+}