- Removed `AbteilungViewModel`, `BewerbAnlegenViewModel`, `BewerbViewModel`, and `CreateBewerbWizardScreen`.
- Cleaned up related imports and unused domain models.
- **Navigation Updates:**
- Added `AppScreen.Billing` route for participant billing linked to an event and tournament.
- **UI Additions:**
- Introduced `BillingScreen` and `BillingViewModel` for participant account management and manual transactions.
- Updated `TurnierAbrechnungTab` to include `BillingScreen` and enable account interaction.
- **Turnier Enhancements:**
- Enhanced `NennungenTabContent` to support navigation to billing via a new interaction.
- Added billing feature as a dependency to `turnier-feature`.
- **Billing Domain:**
- Extended `Money` to include subtraction operation and improved formatting for negative amounts.
- Added DTOs (`TeilnehmerKontoDto`, `BuchungDto`, `BuchungRequest`) for seamless data exchange with backend.
- **Test Improvements:**
- Updated `PreviewTurnierAbrechnungTab` to include interactive billing placeholder.
- **Misc Updates:**
- Enhanced breadcrumb navigation for billing in `DesktopMainLayout` for better user experience.
- Added `Money` value class for precise monetary operations.
- Implemented `BillingCalculator` to handle fee calculations, including ÖTO-compliant contributions and prize distribution rules.
- Created `BillingModule` for dependency injection using Koin.
- Integrated `billing-feature` into the desktop shell and project dependencies.
- Introduced `TurnierWizardV2` and `VeranstalterAuswahlV2` screens with improved UI and billing synchronization support.
Signed-off-by: Stefan Mogeritsch <stefan.mo.co@gmail.com>
