Fix Windows key mappings

[jeremy-visionaid]

Fixes: #27

[jeremy-visionaid]

I can't promise this is perfect as I have an NZ keyboard which has some quirks. But since there's a few intertwined issues, I reckon we should just merge this and fix up any other problems later.

[jeremy-visionaid]

I note that NumPadDecimal seems to duplicate NumPadPeriod (i.e. NumPadDecimal should probably be removed in another commit/PR). GraveAccent also possibly duplicates Backquote

[jeremy-visionaid]

Hmm, not sure I agree with CoPilot's suggestions TBH... It removes the grouping from the NativeMethods. The using change is neither here nor there, but the change breaks the formatting, so another change will be needed to fix it, and maybe creates a bunch of conflicts, so probably better to just put it back as it was IMHO.

The editorconfig generally isn't being respected through the project, which I've tried to be sympathetic too when staging fixes (it makes the IDE think there's a bunch of errors/warnings) which don't apply at build time, but that should probably be fixed up as a separate issue later.

[davidortinau]

@jeremy-visionaid I totally agree, the Copilot reviews are not amazing yet. I'm mostly using them to just test it out.