Clean Mastodon's Media Storage with tootctl↗

Mastodon 4.1.0rc1 has new flags to `tootctl media remove` to help prune old storage of profile avatars and header images. Each account you encounter, either via follow, boost, or reply to a post that was followed or boosted, hits your instance and caches an avatar (profile pic) and header image (banner image). This can take up a lot of space!