By Devik Jain and Susan Mathew (Reuters) -European shares rose on Monday as the oil and gas sector marked its best session in two months, while bleak euro zone investor morale kept sentiment in check ahead of the European Central Bank’s plan to start hiking interest rates this month. The continent-wide STOXX 600 index was up 0.5% after falling last week on worries about a potential global economic slowdown. Volumes were subdued due to a U.S. market holiday. London-listed oil giants BP Plc and Shell, and France’s TotalEnergies jumped between 4.6% and 4.4%. They were the biggest boost to the STO…