File handlersThe file_handlers web app manifest member registers an installed web app as a handler for files with specific file extensions or MIME types.progressive-web-appProgressive web applimitedhttps://wicg.github.io/manifest-incubations/#file_handlers-memberhttps://developer.mozilla.org/docs/Web/API/LaunchParams/filesapi.LaunchParams.filesmanifests.webapp.file_handlershttps://nowyoucanuse.com/features--app-file-handlers.html