add: implementacao inicial

Dtos/CreateWorkshopRequest.cs

@@ -0,0 +1,13 @@
+
+namespace CampusWorkshops.Api.Dtos;
+
+// DTO para criação de Workshop.
+public record CreateWorkshopRequest(
+    string? Title,
+    string? Description,
+    DateTimeOffset StartAt,
+    DateTimeOffset EndAt,
+    string? Location,
+    int Capacity,
+    bool IsOnline
+);