FEATURE REQUEST: Overlay customization

[vertexgamer]

1. Instantaneous GpuBusy reading instead of average of >5s

2. Per character custom font size on group names (e.g. "CPU₁" instead of "CPU 1")

3. Custom sensor units (GB/MB, Ghz/Mhz etc......)

4. Custom column spacing, e.g. ‎ ‎ ‎ ‎ "GPU‎‎‎ 99% 1800MHz" ‎ ‎ ‎ ‎ "GPU ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ 99% ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ 1800MHz"