chore: change traffic unit to IEC (GiB)
chore: update dependencies and refactor user data handling by kastov
- Added new dependencies:
@remnawave/backend-contractandaxios. - Updated
.gitignoreto include.envfile. - Refactored
fetchUserByTelegramIdto return a more structured response. - Updated
SubscriptionInfoWidgetandInstallationGuideWidgetto use the new user data structure. - Removed deprecated
IUserDatatype and related code. - Improved error handling in API routes