Relays don't store images, just links, so you'd need a way to identify those as image links.
It would probably be easier to just have a setting at the client level where the client doesn't render images unless you click on them.
Discussion
The goal is to have a client that can’t get you fired.
If you don't want to get fired, maybe you should be working instead of browsing Nostr.
What I love about capitalism is that you create a product and see if the market wants it. Not all products are for all people.
