BERLIN (Reuters) – Once purely the stuff of action movie plots, the prospect of the lights going out in Europe’s biggest economy has become a conceivable threat during the current energy crisis. Looking to be the heroes in a real-life blackout, a growing number of Germans are turning to citizens’ courses to learn how to act if they find themselves plunged into darkness. “If the electricity goes out then absolutely nothing works any more. And we need to understand what ‘nothing working’ really means,” said Birgitt Eberlin, an instructor at the Workers’ Samaritan Federation (ASB). Simple tasks -…