further optimized assets with expo-optimize

adding build settings to app.json

managing environment variables

optimizing javascript bundles

optimizing assets

finalizing seller contact form and fixing some problems

fixed messages screen

updated accounts screen functionality and fixed some issues

updated useNotifications hook

added rootNavigation & useNavigations custom hook

adding push notification

added token to outgoing requests, completed login & registration screens with animation

added auth navigation stack functionality

adding offline notice

using react-native-expo-image-cache to cache images