Add PocketBase client with contracts and sharp build tooling

Elternbeirat.Web/Features/Events/EventService.cs

@@ -1,8 +1,9 @@
 using System.Globalization;
+using Elternbeirat.Web.Services;
 using YamlDotNet.Serialization;
 using YamlDotNet.Serialization.NamingConventions;
 
-namespace Elternbeirat.Web.Services;
+namespace Elternbeirat.Web.Features.Events;
 
 /// <summary>
 /// Reads the calendar entries from <c>Content/events.yml</c> once at startup and