Ntfy Core integration: Allow attaching images to notifications

ntfy Core Integration can be found here

Currently, the ntfy Core Integration (Added in 05.2025) only supports sending text notifications to a ntfy server. Ntfy itself supports sending message as markdown with images (docs). There is a HACS project (github[dot]com/hbrennhaeuser/homeassistant_integration_ntfy) for ntfy that already seems to support image notifications, but I feel being able to send images with the core integration is important as I use ntfy for all my notifications, and I have a frigate security system integrated into Home Assistant I would like image notifications for.

If any further details or information is needed feel free to contact me here or comment.
Cheers, Liftoff1862

I submitted a PR that is currently waiting for approval that will allow attaching files and images (via URL). Attachment upload and actions will come later.