Mix flour, oats, baking soda, cinnamon, cloves, nutmeg, baking powder, and salt together in a microwave-safe mug. Stir egg white, milk, brown sugar, and vanilla extract into flour mixture until batter is fully combined; slowly stir in blueberries. Cook in microwave for 1 minute. Check muffin for doneness and continue cooking in 15 second increments until cooked through, about 1 minute more.