V13: Add eventype to webhookevents (#15157)

* Refactor IWebhookEvent to contain event type.

* refactor frontend to filter on eventType.

* Display event names

* refactor to use eventNames

* remove npm from overview

* implement alias for WebhookEvents

* Implement [WebhookEvent] attribute

* Refactor IWebhookService to get by event alias and not name

* Rename parameter to fit method name

* to lower event type to avoid casing issues

* Apply suggestions from code review

Co-authored-by: Ronald Barendse <ronald@barend.se>

* Change event names from constants to hard coded. And give more friendly names

* Refactor to not use event names, where it was not intended

* Add renaming column migration

* display event alias in logs

* Update migration to check if old column is there

* Apply suggestions from code review

Co-authored-by: Kenn Jacobsen <kja@umbraco.dk>

* add determineResource function to avoid duplicate code

---------

Co-authored-by: Zeegaan <nge@umbraco.dk>
Co-authored-by: Ronald Barendse <ronald@barend.se>
Co-authored-by: Kenn Jacobsen <kja@umbraco.dk>

src/Umbraco.Core/Persistence/Repositories/IWebhookRepository.cs

@@ -29,9 +29,11 @@ public interface IWebhookRepository
     /// <summary>
     ///     Gets a webhook by key
     /// </summary>
-    /// <param name="eventName">The key of the webhook which will be retrieved.</param>
-    /// <returns>The <see cref="Webhook" /> webhook with the given key.</returns>
-    Task<PagedModel<Webhook>> GetByEventNameAsync(string eventName);
+    /// <param name="alias">The alias of an event, which is referenced by a webhook.</param>
+    /// <returns>
+    ///     A paged model of <see cref="Webhook" />
+    /// </returns>
+    Task<PagedModel<Webhook>> GetByAliasAsync(string alias);
 
     /// <summary>
     ///     Gets a webhook by key