- Introduced `onKeycloakLogin` callback in LoginScreen for Keycloak-based authentication.
- Updated Login UI with "Login with Keycloak" button and loading indicator for OIDC flow.
- Implemented dividers and spacing for improved visual structure.
- Refactored LandingScreen into a separate file for better modularity and maintenance.
- Reintroduced LandingScreen features, hero section, and footer with enhanced composables.
- Added `composeHotReload` plugin and `uiTooling` dependency for development improvements.
Signed-off-by: Stefan Mogeritsch <stefan.mo.co@gmail.com>