Improved changelog update flow with auto-generated image support

[corywatilo]

To support what Team Marketing wants to do with changelog images, I've updated the edit changelog form to support it in a mostly-automated way.

I'm imagining we can have some templates that personalize the design (mostly colors) for each product, then by changing a few variables in the form, they'll be able to auto-generate high quality images that can be used on social media.

Note that I added labels to inputs to make things more clear.

Fields needed for this

Field	Status	Notes
Status	✅	Add page name where it will appear (to make it more clear), eg: Roadmap, In progress, Changelog
Date	✅
Team	✅
Author		Populate with all moderators, option for "None" to not add attribution
Product or feature	✅	Should infer details used in image: product name, image, background color (using each product's icon color)
Type	✅	Set accurate callout in image
Title	✅
Details	✅
Show on homepage	✅
Short title		For use in image only, should support color customization
Title size		Default to something in reasonable, then let you increase/decrease from there
Hedgehog		We'll create a library of a bunch of these to use, should show visually in the picker
Image size		Default to something in reasonable, then let you increase/decrease from there
Image rotation		Default to middle, then can rotate a few degrees in either direction

Exported image

I was imagining we can use the OG image generation on site build to make this work. So the process for getting the image would be:

1. Publish a changelog item
2. Wait for the site to build
3. Download the rendered image
4. Upload to Twitter or whatever

If there's a way to generate it without having to wait, even better, but worst case, seems like above would work.

Note: Would want to use square or even slightly vertical) dimensions, not our standard 1200x630 open graph image dimensions, since these are exclusively for social sharing and not for use as actual open graph images (since we don't have changelog permalink pages).