XInput Slots discussion

[Kanuan]

Created this discussion thread since this topic was being discussed in a unrelated issue.

I think, at the very least, DS4Windows should show in the Log which XInput Slot the virtual Xbox 360 is associated to. This would make easier for us to troubleshoot controller detection issues since it would be one less thing to have to ask the user to verify. Any addition that help us gather information on the current user setup is one the benefit us.

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Other useful quality-of-life additions that would be cool but are not as necessary would be:

1. Showing (somehow) the current XInput slot for controllers using X360 emulation in the "Controllers" tab
   • Having a whole new colum just for this seems unecessary so I'm not sure what would be the best way to implement this
2. Lightbar color as current Slot
3. Special action for flash current slot as lightbar color
4. DualSense/Pro controller/Joycon LEDs as current Slot

Again, these other features may not be worth to implement, but it would greatly facilitate my life having at least the current slot registered in the log.