Implemented the "folder" property for the File enumeration in the library target.

Library/Sources/Internal/Enumerations/File.swift

@@ -26,7 +26,13 @@ extension File {
     
     var filePath: String {
         switch self {
-        default: fileName
+        default: folder.path + fileName
+        }
+    }
+    
+    var folder: Folder {
+        switch self {
+        default: .root
         }
     }