Remove DispatchR and use Mediator

Application/PlayLists/Queries/GetPlayListByIdQuery.cs

@@ -1,9 +1,9 @@
 using Ardalis.Result;
-using DispatchR.Abstractions.Send;
+using Mediator;
 using Musify.Application.PlayLists.Responses;
 
 namespace Musify.Application.PlayLists.Queries
 {
     public record GetPlayListByIdQuery(Guid Id)
-        : IRequest<GetPlayListByIdQuery, Task<Result<PlayListResponse>>>;
+        : IQuery<Result<PlayListResponse>>;
 }

Application/PlayLists/Queries/GetPlayListsByUserIdQuery.cs

@@ -1,5 +1,5 @@
 using Ardalis.Result;
-using DispatchR.Abstractions.Send;
+using Mediator;
 using Musify.Application.Contracts.Application;
 using Musify.Application.PlayLists.Responses;
 
@@ -10,5 +10,5 @@ namespace Musify.Application.PlayLists.Queries
         string Name = "",
         int PageNumber = 1,
         int PageSize = 10)
-        : IRequest<GetPlayListsByUserIdQuery, Task<Result<PaginatedResponse<PlayListResponse>> >>;
+        : IQuery<Result<PaginatedResponse<PlayListResponse>> >;
 }

Application/PlayLists/Queries/GetPlayListsQuery.cs

@@ -1,10 +1,10 @@
 using Ardalis.Result;
-using DispatchR.Abstractions.Send;
+using Mediator;
 using Musify.Application.Contracts.Application;
 using Musify.Application.PlayLists.Responses;
 
 namespace Musify.Application.PlayLists.Queries
 {
     public record GetPlayListsQuery(int PageNumber = 1, int PageSize = 10)
-        : IRequest<GetPlayListsQuery, Task<Result<PaginatedResponse<PlayListResponse>> >>;
+        : IQuery<Result<PaginatedResponse<PlayListResponse>> >;
 }