Eca integration or simpler form for site users

Problem/Motivation

If offering this to a site logged in non trusted user, the process should be simpler.
Selecting models / provider configuration and prompting is maybe too much for general user.

If this could be used through ECA, it would be easier to create custom process for any user to create images.
Or if not ECA, then some predefined settings so that there will be left only the prompt for the end user to write what kind of image they want to create.

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes