Add DeleteOutResCommand for CQRS pattern

Introduced the `DeleteOutResCommand` record in the `ReC.Application.OutResults.Commands` namespace. This command implements the `IRequest` interface from `MediatR` and includes two nullable properties: `ActionId` and `ProfileId`. Added the `MediatR` library to support the CQRS pattern.

src/ReC.Application/OutResults/Commands/DeleteOutResCommand.cs

@@ -0,0 +1,10 @@
+using MediatR;
+
+namespace ReC.Application.OutResults.Commands;
+
+public record DeleteOutResCommand : IRequest
+{
+    public long? ActionId { get; init; }
+
+    public long? ProfileId { get; init; }
+}