Overlay visual scaling

[hunterpankey]

• Add OverlayScale setting to store scaling factor
• Add scaling slider at 50% to 250% of default
• Add Label displaying the current setting.
• Add reset button to set to 100% (default 1.0x scaling)
• Modify Stats calls to Overlay.ArrangeOverlay() to scale width and height parameters.

Also,

• Fix bug where custom font might be reset to default when saving settings without a change to the font selection. Settings save method used a local string copy of the custom font setting that wasn't being set on load. Saving has been changed to check the existing user setting instead of the local string.

Note: This looks bad at high scaling percentages as it does raster font scaling, resulting in jaggies and blurring at the edges of characters. In the long run, it would be cool to have SVG backgrounds that scale nicely and to dynamically choose font sizes based on scaling.

[jerjergor0918]

I want to change the face(I mean the background) of the overlay https://www.mediafire.com/file/bemsx9mh0o89pq3/NObg.rar/file

This is the picture .. There are another overlay that can change ourselves but I dont want to use it .

P.S. https://www.mediafire.com/file/ovb7h20w5krpjpp/png.rar/file

Those look good too .. also it is good to add option to choose what at the display