WASHINGTON — President Barack Obama outlined major new government stimulus and jobs proposals on Tuesday, saying the nation must continue to “spend our way out of this recession.” Without giving a price tag, Obama proposed a package of new spending for highway, bridge and other infrastructure projects, deeper tax breaks for small businesses and tax incentives to encourage people to make their homes more energy efficient. “We avoided the depression many feared,” Obama said in a speech at the Brookings Institution, a Washington think tank. But, he added, “Our work is far from done.”