[Feature request] Outline or a tree side panel of the current file.

[astrochili]

When there are many files and nodes in a script, it becomes necessary to navigate between them and understand the overall structure.

[olivermarshall2]

Yes yes and yes. Any sense of being able to visualise the structure, or easily find your way around the structure would be appreciated.

[lunarcloud]

Duplicate of #23 and #377