add contracts overview tab with KPIs, recent contracts, and charts

- Introduced OverviewContractKpisDto and OverviewRecentContractDto for contract metrics.
- Implemented OverviewContractsTabDto to structure the contracts tab response.
- Added contract-related constants for status groupings and pipeline stages.
- Created OverviewContractsTabPanel and OverviewRecentContractsTable components for UI representation.
- Updated OverviewService and OverviewRepository to fetch contract data.
- Integrated contracts tab into OverviewController and OverviewTabContent.
- Added hooks for fetching contracts data in useOverview.
- Updated types in the overview module to include contracts.
- Enhanced the contract detail page with a "View contract" button for generated PDFs.

apps/edr-freight-api/src/modules/overview/overview.module.ts

@@ -7,6 +7,7 @@ import { Booking } from "../bookings/entities/booking.entity";
 import { Cargo } from "../cargoes/entities/cargoes.entity";
 import { Container } from "../container-management/entities/container.entity";
 import { Company } from "../companies/entities/company.entity";
+import { Contract } from "../contracts/entities/contract.entity";
 import { PaymentEntity } from "../payment/entities/payment.entity";
 import { Train } from "../trains/entities/train.entity";
 import { Wagon } from "../wagons/entities/wagon.entity";
@@ -24,6 +25,7 @@ import { OverviewService } from "./overview.service";
       Wagon,
       Container,
       Cargo,
+      Contract,
       Employee,
       User,
     ]),