feat: :sparkles: Transmission Histogram (83)

[WYVERN2742]

Capture:

• Added support for any button to trigger page update and become set to loading
• Added -45/+45 quick rotation buttons Projection preview settings:
• Added transmission histogram, with red highlight for <5% transmission
  • This took far too long due to a scaling bug in chart.js
• Fixed raw / log preview settings, they now work correctly.
• Added "Transmission Hotspot" setting to highlight areas with <5% transmission
• Removed not-implemented gamma setting
  • This would require a rewrite of the projection preview system to implement well. (e.g using the client to render images, and replacing all images with editable canvases, and perform image processing in js)