For this ticket, you will create a method for counting the articles on which Files Uploaded get placed.
==Definitions of metrics that use this method
- **Pages with uploaded files** A count of the total number of articles all the Files Uploaded for the event are on. Used on the Event Summary reports (T205561 and T206692)
- **Pages using this file** The same metric but for an individual uploaded file. I.e., this provides a count of the articles that contain a single file that gets detailed in the in the Files Uploaded reports (T212547)
==Requirements
- **All filetypes:** These metrics will track images, video files, audio files and other upload types.
- **Uploads to Commons //and// local Wikipedias: ** We will track uploads to all Commons and any Wikipedia as long as they are specified as wikis of interest for the event.
- **Article pages on all wikis (not just those specified): **The Main space articles counted, on the other hand, can be on any wiki; the wikis do not need to be specified as wikis of interest in setup.