Remove DispatchR and use Mediator

Application/PlayLists/Commands/CreatePlayListCommand.cs

@@ -1,5 +1,5 @@
 using Ardalis.Result;
-using DispatchR.Abstractions.Send;
+using Mediator;
 using Musify.Application.Contracts.Application;
 using Musify.Application.PlayLists.Responses;
 using Musify.Domain.Entities;
@@ -11,7 +11,7 @@ namespace Musify.Application.PlayLists.Commands
         string Name,
         string Description,
         IFileData? Picture)
-        : IRequest<CreatePlayListCommand, Task<Result<PlayListResponse>> >
+        : ICommand<Result<PlayListResponse>>
     {
         public static PlayList ToEntity(CreatePlayListCommand command, string originalKey, string smallKey, string mediumKey, string largeKey)
         {

Application/PlayLists/Commands/DeletePlayListCommand.cs

@@ -1,8 +1,8 @@
 using Ardalis.Result;
-using DispatchR.Abstractions.Send;
+using Mediator;
 
 namespace Musify.Application.PlayLists.Commands
 {
     public record DeletePlayListCommand(Guid UserId, Guid PlayListId)
-        : IRequest<DeletePlayListCommand, Task<Result> >;
+        : ICommand<Result>;
 }

Application/PlayLists/Commands/UpdatePlayListCommand.cs

@@ -1,5 +1,5 @@
 using Ardalis.Result;
-using DispatchR.Abstractions.Send;
+using Mediator;
 using Musify.Application.Contracts.Application;
 using Musify.Application.PlayLists.Responses;
 
@@ -11,5 +11,5 @@ namespace Musify.Application.PlayLists.Commands
         string? NewName,
         string? NewDescription,
         IFileData? NewPicture)
-        : IRequest<UpdatePlayListCommand, Task<Result<PlayListResponse>> >;
+        : ICommand<Result<PlayListResponse>>;
 }