By Shashwat Chauhan and Shubham Batra (Reuters) -Britain’s FTSE 100 climbed on Monday as heavyweight energy stocks rose, tracking strength in crude oil prices, while Vodafone’s shares topped the list of gainers after telecom firm Iliad submitted a proposal to create a joint venture in Italy. The blue-chip FTSE 100 gained 0.5%, while the more domestically focused FTSE 250 mid-cap index edged 0.1% higher. Vodafone jumped 3.9% after Iliad said it submitted a proposal to the telecom company to merge their Italian businesses. Heavyweight energy stocks added 1.5%, tracking a jump in crude oil prices…