Add cover image creation for listicles

[inFocus7]

We should expand the listicle tool to allow for users to enable the creation of image covers.

We would likely want to:

• Add a checkbox in the content generation portion to enable the cover image generation.
• (OPTIONAL / INVESTIGATE) Prompt ChatGPT to generate a title + subtitle.
• Create a separate field in the JSON prompt so the top-level object has a cover field with relevant data. Here we would just reference the image name (and any relevant information) to use for it.
• (OPTIONAL / INVESTIGATE) Add two text fields in the image processing step under a Cover group: Title Subtitle, where a user could input the text they want generated there.

The two ? steps represent that one should be chosen as we see fit.

The first ? is nice to completely let AI decide everything and make it all automatic, but it would cost more due to prompt tokens. The second ? would mean more intervention from user, but is cheaper.

Things to note:

• How do we want to prompt for a cover image generation?
  • Do we just want to use the first image that was generated, a random image from the generated list, or create a new image?