Add meta link to open script editor from script doc

[pcvonz]

Link to feature request

Screencast.From.2024-12-27.18-59-56.mp4

[dalexeev]

I would suggest moving the icon before the text, to be consistent with most icons in the built-in help (except external links).

Or maybe not use an icon at all, but add text like Script: res://script.gd, where the path is a link. This would be more informative, since it doesn't require you to click the link to see the path.

Also see #100803, which adds a resource link handler too.

[Lazy-Rabbit-2001]

A very nice enhancement, and now we have the following entrances to a script from places out of the script editor:

1. Clicking the script icon at the right side of a node in the scene tree editor
2. Clicking the script icon at the right side of a type in a create dialog (another pr to be merged soon)
3. This pr, from a doc