Add filesize to all images in the catalog

[obulat]

Problem

Currently, 561,894,897 images do not have the filesize value set.

Description

We should audit the provider scripts to see which of them do not get the filesize and update them.
After that, we should run a backfill to get the file size information from providers, probably also updating the width, height and filetype at the same time.

[obulat]

Adding a note here that filesize is not available in some provider API responses. It doesn't seem necessary to provide filesize value for all items because frontend performance does not rely on it (unlike the image dimensions, for example). Getting the filesize through additional HEAD requests during the catalog ingestion will slow down the process. The API consumer can also get the filesize using a HEAD request if they need it.

It is not possible to backfill the filesize. Unlike the filetype, which we can extract from the media URL that already exists in the database, filesize information needs to be ingested from the providers. So, I am going to close this issue as solving #1545 should be enough.