Blackberry Lime Cheesecake Cupcakes

Ingredients: 1 1/2 cups all-purpose flour1/2 cup unsalted butter, room temperature1 cup granulated sugar2 large eggs1/2 cup milk1 teaspoon vanilla extract1 teaspoon lime zest1/2 teaspoon baking powder1/4 teaspoon baking soda1/4 teaspoon salt1/2 cup fresh blackberries (plus extra for topping)1/2 cup cream cheese, softened1/2 cup powdered sugar2 tablespoons lime juice1/2 teaspoon lime zest for garnishLime slices