Extracted some pages to their own assembly and finished the artifact display page code

OpenArchival.Blazor.CustomComponents/FileUploadOptions.cs

@@ -0,0 +1,10 @@
+namespace OpenArchival.Blazor.CustomComponents;
+
+public class FileUploadOptions
+{
+    public static string Key = "FileUploadOptions";
+    public required long MaxUploadSizeBytes { get; set; }
+    public required string UploadFolderPath { get; set; }
+
+    public required int MaxFileCount { get; set; }
+}