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

feat(emailer): add Postmark and Resend providers

backend/Modules/Messaging/Handlers/GetReplies.cs

@@ -0,0 +1,43 @@
+using Hutopy.Modules.Messaging.Data;
+using Hutopy.Modules.Messaging.Models;
+
+namespace Hutopy.Modules.Messaging.Handlers;
+
+[PublicAPI]
+public class GetRepliesRequest
+{
+    public Guid SubjectId { get; set; }
+    public Guid ParentId { get; set; }
+    [BindFrom("page_size")] public int PageSize { get; set; } = 10;
+    [BindFrom("last_id")] public Guid? LastId { get; set; }
+}
+
+[PublicAPI]
+public record struct GetRepliesResponse(
+    IEnumerable<MessageDto> Messages);
+
+public class GetReplies(
+    MessagingDbContext context)
+    : Endpoint<GetRepliesRequest, GetRepliesResponse>
+{
+    public override void Configure()
+    {
+        Get("/api/messages/{ParentId:guid}/replies");
+        Options(o => o.WithTags("Messages"));
+        AllowAnonymous();
+    }
+
+    public override async Task HandleAsync(
+        GetRepliesRequest req,
+        CancellationToken ct)
+    {
+        var replies = await context.GetMessagesAsync(
+            req.SubjectId,
+            req.ParentId,
+            req.LastId,
+            req.PageSize,
+            ct);
+
+        await SendOkAsync(new GetRepliesResponse(replies), ct);
+    }
+}