Furniture retailer The Lovesac Co. is joining Midtown Sacramento’s Ice Blocks project. Stamford, Connecticut-based Lovesac (Nasdaq: LOVE) will fill a space between Bluemercury and West Elm, said Ice Blocks developer Mike Heller. The store is expected to open around April, he said. Lovesac will fill 1,133 square feet in Ice Blocks. “They are a national brand growing…