Enhancement: Importing Single Chart Files Into An Existing Chart

[Average-FNF-Modder]

Issue Checklist

• [X] I have properly named the enhancement
• [X] I have checked the issues/discussions pages to see if the enhancement has been previously suggested

What is your suggestion, and why should it be implemented?

      When in chart editor, I think we should be able to load in a single charting file to be added to the current ones we're working on, as a different variation of the chart. This would allow people to copy over parts of charts, compare and contrast versions of a chart they're working on in real time, copy over event patterns, etc. Very useful.

[Lasercar]

This is should be already possible, but it doesn't work: https://github.com/FunkinCrew/Funkin/issues/4253