feat: Add profitability calculation schemas and service functions

- Introduced Pydantic schemas for profitability calculations in `schemas/calculations.py`.
- Implemented service functions for profitability calculations in `services/calculations.py`.
- Added new exception class `ProfitabilityValidationError` for handling validation errors.
- Created repositories for managing project and scenario profitability snapshots.
- Developed a utility script for verifying authenticated routes.
- Added a new HTML template for the profitability calculator interface.
- Implemented a script to fix user ID sequence in the database.

models/__init__.py

@@ -27,16 +27,19 @@ from .project import Project
 from .scenario import Scenario
 from .simulation_parameter import SimulationParameter
 from .user import Role, User, UserRole, password_context
+from .profitability_snapshot import ProjectProfitability, ScenarioProfitability
 
 __all__ = [
     "FinancialCategory",
     "FinancialInput",
     "MiningOperationType",
     "Project",
+    "ProjectProfitability",
     "PricingSettings",
     "PricingMetalSettings",
     "PricingImpuritySettings",
     "Scenario",
+    "ScenarioProfitability",
     "ScenarioStatus",
     "DistributionType",
     "SimulationParameter",