Controller: Add invert and button deadzone options

src/core/settings.h

@@ -17,6 +17,7 @@ struct SettingInfo
   {
     Boolean,
     Integer,
+    IntegerList,
     Float,
     String,
     Path,
@@ -31,6 +32,7 @@ struct SettingInfo
   const char* max_value;
   const char* step_value;
   const char* format;
+  const char** options;
   float multiplier;
 
   const char* StringDefaultValue() const;