feat(project-finance): add finance data export functionality

- Implemented a new endpoint in the project finance controller to export financial data as an Excel file, allowing users to download project finance details.
- Enhanced the frontend to include an export button that triggers the finance data export, with appropriate loading states and error handling.
- Added functionality to group exported data by status, priority, or phases, improving the usability of the exported reports.
- Updated the project finance API service to handle the export request and return the generated Excel file as a Blob.

worklenz-backend/src/routes/apis/project-finance-api-router.ts

@@ -14,5 +14,6 @@ projectFinanceApiRouter.get(
   safeControllerFunction(ProjectfinanceController.getTaskBreakdown)
 );
 projectFinanceApiRouter.put("/task/:task_id/fixed-cost", ProjectfinanceController.updateTaskFixedCost);
+projectFinanceApiRouter.get("/project/:project_id/export", ProjectfinanceController.exportFinanceData);
 
 export default projectFinanceApiRouter;