Debug graph improvements

[GinjaNinja32]

before:
graph takes up to ~30ms to render on my machine, no configurability

after:
graph takes up to ~10ms to render

graph can be configured to hide specific lines (grey in list) and change scale (here 8x)

graph is controlled by holding a specific modifier (default Left Ctrl) while the debug view is open and:

• left clicking an item to toggle
• right clicking an item to toggle all
• left clicking the scale (above all items, hidden unless modifier held) to zoom in by 2x
• right clicking the scale to zoom out by 2x
• middle clicking the scale to reset to default size