Add initial data wish impl

[cwervo]

This adds a Wish for pulling data in from a website. On first read it stores data as a file & subsequent reads will reference the file.

Not sure this is the best form factor for this, feedback welcome!

set website https://cwervo-exampleData.express.val.run

When $this has data /data/ from $website {
  Wish $this is labelled $data
}

Wish $this is outlined white

[osnr]

Can you use a When when to implement this, so you don't need the Wish?

When $website has data /data/ {
  Wish $this is labelled $data
}