Most services are implemented as command/queries

Code cleanup

ModernKeePass.Application/Recent/Commands/ClearAllRecent/ClearAllRecentCommand.cs

@@ -0,0 +1,23 @@
+using MediatR;
+using ModernKeePass.Application.Common.Interfaces;
+
+namespace ModernKeePass.Application.Recent.Commands.ClearAllRecent
+{
+    public class ClearAllRecentCommand : IRequest
+    {
+        public class ClearAllRecentCommandHandler : IRequestHandler<ClearAllRecentCommand>
+        {
+            private readonly IRecentProxy _recent;
+
+            public ClearAllRecentCommandHandler(IRecentProxy recent)
+            {
+                _recent = recent;
+            }
+
+            public void Handle(ClearAllRecentCommand message)
+            {
+                _recent.ClearAll();
+            }
+        }
+    }
+}