By Ron Bousso LONDON (Reuters) – Big Oil has never had it so good, and its immediate priority is rewarding shareholders. The world’s largest energy companies, including TotalEnergies, Exxon Mobil and Chevron are ramping up buyback programmes despite criticism that they are not moving swiftly enough to increase oil and gas output as high fuel prices pinch consumers worldwide. Exxon Mobil, Chevron, Shell and TotalEnergies produced a combined profit of $51 billion, with Exxon topping the pile at $18 billion. BP is set to report next Tuesday. That money is increasingly going into shareholder buyba…