Refactor RecActionDto and add InvokeRecActionCommand

Converted RecActionDto from class to record for immutability
and value-based equality. Added nullable properties
`ActionId` and `ProfileId` to RecActionDto.

Introduced InvokeRecActionCommand.cs, which includes:
- A new InvokeRecActionCommand record inheriting from RecActionDto.
- Constructors for initializing InvokeRecActionCommand.
- An extension method `ToInvokeCommand` for converting
  RecActionDto to InvokeRecActionCommand.

src/ReC.Application/Common/Dto/RecActionDto.cs

@@ -1,6 +1,6 @@
 namespace ReC.Application.Common.Dto;
 
-public class RecActionDto
+public record RecActionDto
 {
     public long? ActionId { get; init; }
 

src/ReC.Application/RecActions/Commands/InvokeRecActionCommand.cs

@@ -0,0 +1,20 @@
+using ReC.Application.Common.Dto;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ReC.Application.RecActions.Commands;
+
+public record InvokeRecActionCommand : RecActionDto
+{
+    public InvokeRecActionCommand(RecActionDto root) : base(root) { }
+
+    public InvokeRecActionCommand() { }
+}
+
+public static class InvokeRecActionCommandExtensions
+{
+    public static InvokeRecActionCommand ToInvokeCommand(this RecActionDto dto) => new(dto);
+}