Support fields & variables in script editor

[steverep]

One of the most useful thing about scripts is that they support data passed as field inputs, yet these can only be added in Yaml. I would like to see the script editor upgraded to support:

• fields
• variables
• description
• script name consistent with the new automation editor (i.e. not always a text field)

[karwosts]

Out of curiousity, if we were to add this, what do you think it should look like? AFAIK things like fields have a fairly extensive yaml settings, would it just be a big blank yaml box to type yaml into, or would we have lots of textboxes? A selector to choose a selector?

[steverep]

Funny I was just thinking about this and looking at how to maybe implement it...

For fields, my thought would just be to make it another collapsible section above the sequence/actions section, basically with the same exact format:

• A button to add a field section, each of which is collapsible
• Each field section just has a form to input the same values as in yaml
• Each field section can be removed, reordered, switched to yaml mode, etc.

I guess I don't see it as any more expensive than the forms for some triggers/conditions/actions. I think it's much simpler actually. WDYT?

[karwosts]

Took a pass at adding a fields editor in #18250. Check it out and see if it lines up with what you were thinking.