Show label of trace on graph

[jgeudens]

When there are many traces visible, it is hard to recognize which trace is which. The colors will be very similar. It might be interesting to show a label on the left side with the name.

Some thoughts

• Trim/clip text when too long
• Background of the label can be the graph color. The text should be inverted to stay readable
• Use same Z coordinate as the graph to make sure visible trace has a visible label.