loveplus: add printer options (#325)

## Link to GitHub Issue, if one exists
n/a

## Description of change
Add the same options as SDVX printer.

## Testing
Tested all options with LP.

src/spice2x/launcher/options.h

@@ -241,6 +241,11 @@ namespace launcher {
             SDVXWindowedSubscreenBorderless,
             SDVXWindowedSubscreenAlwaysOnTop,
             LovePlusCamEnable,
+            LovePlusPrinterOutputPath,
+            LovePlusPrinterOutputClear,
+            LovePlusPrinterOutputOverwrite,
+            LovePlusPrinterOutputFormat,
+            LovePlusPrinterJPGQuality,
         };
 
         enum class OptionsCategory {