Add countdown.

components/theme/buttons/DefaultButton.tsx

@@ -2,6 +2,7 @@ import { StyleSheet, Pressable } from "react-native";
 import { ThemedView } from "@/components/theme/Theme";
 import { Colors } from '@/constants/Colors';
 import { useColorScheme } from '@/hooks/useColorScheme';
+import { StyleProp, ViewStyle } from 'react-native';
 
 const DEFAULT_WIDTH = 320;
 const DEFAULT_HEIGHT = 68;