Add the oat flour, coconut flour, oats, baking soda, and baking powder to a large bowl. Stir to combine. Blend the dates and water in a small blender until smooth. Add the blended dates, flax eggs, maple syrup, melted coconut oil, coconut milk, apple cider vinegar, cinnamon, and nutmeg. Stir until combined. Add the coconut, carrot, apple, raisins, and nuts and gently stir to combined.