Audio Mode for Instrumental & Karaoke (#749)

* Add AudioMode

* Update Theme System Version

* Update Theme System Version

* Version 11

* Version 8

* Update Theme System Version

* Add AudioMode

* Update Theme System Version

* Add AudioMode

* Add AudioMode

* Add AudioMode

* Add AudioMode

* Add AudioMode

* No effect for Instrumental

* Instrumental Check

* Add HasInstrumental Check

---------

Co-authored-by: Florian Ostertag <flokuep@users.noreply.github.com>

Output/PartyModes/Challenge/Themes/Default.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <root>
-  <ThemeSystemVersion>7</ThemeSystemVersion>
+  <ThemeSystemVersion>8</ThemeSystemVersion>
   <Info>
     <Name>Default</Name>
     <Author>brunzel</Author>