Implement scaling

[AEAEAEAE4343]

Fully DPI-awareness (PerMonitorV2)
Layout at 96dpi, scaled up afterwards
After scaling layout changes must be done at full DPI
Renderers will draw at full DPI
Branch: scaling (based on ad8110e)

General:

• Set high DPI mode to PerMonitorV2 (commit c2b17d6)

Taskbar:

• Disable WinForms automatic scaling (commit 2d1ada4)
• Manually scale the taskbar
• Reshow taskbars when scaling options changed
• Make renderers DPI aware when they change widths and positions

Settings:
To be done