many fixes and improvements - rework for modules/ and common/

feat(emailer): add Postmark and Resend providers

backend/Modules/Creators/Features/RemoveCreator.cs

@@ -0,0 +1,63 @@
+using Hutopy.Infrastructure.Security;
+using Hutopy.Modules.Creators.Data;
+
+namespace Hutopy.Modules.Creators.Features;
+
+[PublicAPI]
+public record RemoveCreatorRequest(
+    string CreatorSlug);
+
+[UsedImplicitly]
+public sealed class RemoveCreatorRequestValidator : Validator<RemoveCreatorRequest>
+{
+    public RemoveCreatorRequestValidator()
+    {
+        RuleFor(r => r.CreatorSlug)
+            .NotNull()
+            .NotEmpty()
+            .WithMessage("You should specify a valid CreatorSlug");
+    }
+}
+
+[PublicAPI]
+public sealed class RemoveCreatorHandler(
+    CreatorsDbContext context)
+    : Endpoint<RemoveCreatorRequest>
+{
+    public override void Configure()
+    {
+        Delete("/api/creators/@{CreatorSlug}");
+        Options(o => o.WithTags("Creators"));
+    }
+
+    public override async Task HandleAsync(
+        RemoveCreatorRequest req,
+        CancellationToken ct)
+    {
+        var creatorSlug = req.CreatorSlug.ToLower();
+
+        var creator = await context
+            .Creators
+            .Where(c => EF.Functions.ILike(c.Slug, creatorSlug))
+            .SingleOrDefaultAsync(cancellationToken: ct);
+
+        if (creator is null)
+        {
+            await SendNotFoundAsync(ct);
+            return;
+        }
+
+        if (creator.CreatedBy != User.GetUserId())
+        {
+            await SendUnauthorizedAsync(ct);
+            return;
+        }
+
+        creator.DeletedAt = DateTimeOffset.UtcNow;
+        creator.DeletedBy = User.GetUserId();
+
+        await context.SaveChangesAsync(ct);
+
+        await SendOkAsync(ct);
+    }
+}