East Sacramento has a new hangout: The Corner Restaurant & Bar, which opened its doors for business last Friday.     "I want this to be a place people want to come and hang out at," said owner Joel Thompson. "As cliche as it sounds, I hope The Corner will be a place like the 'Cheers' bar 'where everyone knows your name.'"     The Corner is located down the street from Sacramento State University at the corner of 57th and J streets in the historic building that was home to the original Shakey's Pizza until the mid-1990s. The Thompson family opened the restaurant with the goal of creating a family-friendly place where students, parents and kids alike could enjoy reasonably priced food