Add Moonglade.IndexNow.Client dependency to Program class

Added the "Moonglade.IndexNow.Client" module to the list of
dependencies in the `Program` class, indicating that this new
module is now part of the program's dependencies.

src/Moonglade.Web/Program.cs

@@ -62,6 +62,7 @@ private static void LoadAssemblies()
             "Moonglade.Core",
             "Moonglade.Email.Client",
             "Moonglade.FriendLink",
+            "Moonglade.IndexNow.Client",
             "Moonglade.Syndication",
             "Moonglade.Theme",
             // Data