Vision Turn Speed Controller

Added toggles for "Vision Turn Speed Control" along with aggressiveness for the speed and sensitivity for the curve itself.

Credit goes to Pfeiferj!

https: //github.com/pfeiferj
Co-Authored-By: Jacob Pfeifer <jacob@pfeifer.dev>

selfdrive/ui/qt/onroad.h

@@ -233,6 +233,7 @@ private:
   bool turnSignalLeft;
   bool turnSignalRight;
   bool useViennaSLCSign;
+  bool vtscControllingCurve;
 
   float cruiseAdjustment;
   float distanceConversion;