RICHMOND, Va. — Another piece of Hull Street in the city is being eyed for development, this time by a local low-income housing firm. Canterbury Development Group filed plans last month for a 90-unit apartment building at 2008 Hull St. Referred to in planning documents as “Swansboro Place,” the new structure would rise four stories on a vacant 1.4-acre lot that takes up the majority of the block bound by Hull, Decatur, East 20th and East 21st streets.