Add the optional ability to print a stacktrace with an OpenGL error (closes #1700)

include/openspace/engine/configuration.h

@@ -108,6 +108,7 @@ struct Configuration {
 
     struct OpenGLDebugContext {
         bool isActive = false;
+        bool printStacktrace = false;
         bool isSynchronous = true;
         struct IdentifierFilter {
             std::string type;