feat: add MediatR handlers for template and channel CRUD

- ServiceResult<T>, ServiceError, ServiceErrorCode, Unit, ServiceResultHelper in Services/Core - RequestHandler<TRequest, TResponse> base class (MediatR-adapted, DoOnHandle pattern) - EmailTemplate handlers: Create, Update, Delete, Get, GetByService - EmailChannel handlers: Create, Update, Delete, Get, GetByService Ref: IT-628 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-05-02 01:07:13 +03:00
parent 73b506992c
commit a03d2269a6
26 changed files with 565 additions and 0 deletions
@@ -0,0 +1,8 @@
+namespace HrynCo.NotificationService.Services.Core;
+
+public enum ServiceErrorCode
+{
+    NotFound = 1,
+    Conflict = 2,
+    InvalidRequest = 3,
+}