Radhika Murari has operated OmMade Peanut Butter from her Reston home since she started it eight years ago. Now, the artisanal food business is ready for a whole new spread. The Virginia governor’s office announced Wednesday that OmMade will invest $300,000 in a new manufacturing center somewhere in Fairfax County. The business will receive a $25,000 grant from the state’s Agriculture and Forestry Industries Development Fund for its commitment to the use of Virginia-grown peanuts.