feat: Enhance project and scenario creation with monitoring metrics

- Added monitoring metrics for project creation success and error handling in `ProjectRepository`.
- Implemented similar monitoring for scenario creation in `ScenarioRepository`.
- Refactored `run_monte_carlo` function in `simulation.py` to include timing and success/error metrics.
- Introduced new CSS styles for headers, alerts, and navigation buttons in `main.css` and `projects.css`.
- Created a new JavaScript file for navigation logic to handle chevron buttons.
- Updated HTML templates to include new navigation buttons and improved styling for buttons.
- Added tests for reporting service and routes to ensure proper functionality and access control.
- Removed unused imports and optimized existing test files for better clarity and performance.

tests/test_import_parsing.py

@@ -8,7 +8,6 @@ import pytest
 
 from services.importers import ImportResult, load_project_imports, load_scenario_imports
 from schemas.imports import ProjectImportRow, ScenarioImportRow
-from models.project import MiningOperationType
 
 
 def test_load_project_imports_from_csv() -> None: