Gov. Ned Lamont, U.S. Sen. Chris Murphy and local officials from across Connecticut gathered in Hartford on Friday to highlight the array of new infrastructure projects that are currently underway in the state and to discuss what other changes residents are likely to see in the next decade and beyond. But amid the calls to boost Connecticut’s transportation and energy infrastructure, officials focused their discussions on one aspect of infrastructure growth: housing. Even with all of the federal funding arriving in Connecticut and other states, Murphy argued that Congress needed to do even more to improve the country’s energy, water and transportation infrastructure. But the most prominent topic of discussion was housing — a vital but politically fraught issue at the moment.