[FEATURE] Adding syntax highlighting to field type of html

I was bit overwhelmed when the html field in `send mail using nodemailer` action didn't had any syntax detection and treated my code as plain string irrespective of whether it is a code comment or actual line of code. I could simply write the markup in an IDE and then paste it back to Pipedream but certain times when i want to make some quick edits i find lost between lines and i go back to IDE where it was saved supposedly.

So it would be great if you have some sort of detection just like we have currently for `code` part where it detects JS syntax.
This would be a bit more to ask, but it would also be great if it can make itself prettier on save.

I don't know of any other platforms having these feature but since pipedream is more focussed towards developers, we kinda miss that while working inside pipedream. It's fine otherwise as we can go back and forth switching IDE and Pipedream to make changes but would be a great addition and would make our workflow faster.

Thanks you ❤