xinput: bind UI, vibration, hotplug (#620)

## Link to GitHub Issue or related Pull Request, if one exists
#616 

## Description of change
`Naive` button is now called `Naive/XInput` and detects XInput
controllers

Add vibration output as "Lights"

Add proper hotplug support and multiple controllers

Fix misc bugs on x86

## Testing
I tested with two xbox controllers.

src/spice2x/rawinput/hotplug.cpp

@@ -119,8 +119,10 @@ namespace rawinput {
                     // success
                     return TRUE;
                 }
-                case 7: { // windows 10 reports this for MIDI?
+                case DBT_DEVNODES_CHANGED: {
+                    // TODO: this can be a little noisy as it gets called on every device
                     this->ri_mgr->devices_scan_midi();
+                    this->ri_mgr->devices_scan_xinput();
                     break;
                 }
             }