The file \ui\files-page.ts and file \ui\drawer-component.ts are part of the source not the binary you installed. https://github.com/genieacs/genieacs/tree/master/ui
In Ubuntu I edited /lib/node_modules/genieacs/public/app.js in 2 places to add “X MIKROTIK Factory Configuration File” to the files list.
Search the app.js file for Ringer and add it after Ringer like this.
“5 Ringer File”,“X MIKROTIK Factory Configuration File”
If you copy and paste you may need to redo the double quotation marks to get rid of the curly ones.
Restart genieacs or restart your server.
This makes it show up in the list but I haven’t tested it with a Mikrotik device yet and it probably won’t survive an upgrade of Genieacs.
Backup the app.js before you start editing and do this at your own risk.