add search box with painter for header to home page

feat: add registration page with styling

fix: login page

refactor and style login page

add custom global widgets

fix `PrimaryButton` loading indicator using `LoadingIndicator` widget

refactor OutlinedButton to SecondaryButton for reusability

add new images and icons

fix: primary button size

add authentication feature without UI design

add onboarding page with proper routing and DB storing

fix: PrimaryButton disabled property

config: add supabase config and initialization

feat: add infrastructure layer for auth feature

feat: add domain layer for auth feature