Add UpdateEndpointProcedure record for endpoint updates

A new `UpdateEndpointProcedure` record was introduced in the
`ReC.Application.Common.Procedures.UpdateProcedure` namespace.
This record implements the `IUpdateProcedure` interface and
includes nullable properties `Active`, `Description`, and `Uri`.

The `ToObjectProcedure` method was added to convert the record
into an `UpdateObjectProcedure` instance, setting the `Entity`
to `"ENDPOINT"`, the `Guid` to the provided parameter, and the
`Endpoint` to the current instance. The method also supports
tracking changes via the optional `changedWho` parameter.

src/ReC.Application/Common/Procedures/UpdateProcedure/UpdateEndpointProcedure.cs

@@ -0,0 +1,18 @@
+namespace ReC.Application.Common.Procedures.UpdateProcedure;
+
+public record UpdateEndpointProcedure : IUpdateProcedure
+{
+    public bool? Active { get; set; }
+    public string? Description { get; set; }
+    public string? Uri { get; set; }
+
+    public UpdateObjectProcedure ToObjectProcedure(long guid, string? changedWho = null)
+    {
+        return new UpdateObjectProcedure
+        {
+            Entity = "ENDPOINT",
+            Guid = guid,
+            Endpoint = this
+        }.ChangedBy(changedWho);
+    }
+}