feat: Implement general catalogs for ports, unit conversions, and units of measure

- Added models, DTOs, services, and routes for ports, including CRUD operations.
- Introduced unit conversions with corresponding models, DTOs, services, and routes.
- Developed units of measure with detailed models, DTOs, services, and routes for various types.
- Ensured all new features are integrated with FastAPI and SQLAlchemy for seamless database interactions.

backend/api/v1/common/base_models.py

@@ -1,6 +1,6 @@
 from datetime import datetime
 
-from sqlalchemy import DateTime, Integer
+from sqlalchemy import DateTime, ForeignKey, Integer
 from sqlalchemy.orm import Mapped, mapped_column
 from sqlalchemy.sql import func
 
@@ -20,8 +20,8 @@ class TimestampMixin:
 class TenantScopedMixin:
     """Mixin for tenant and company scoped entities"""
 
-    tenant_id: Mapped[int] = mapped_column(Integer, nullable=False, index=True)
-    company_id: Mapped[int] = mapped_column(Integer, nullable=False, index=True)
+    tenant_id: Mapped[int] = mapped_column(Integer, ForeignKey("a76.tenants.id"), nullable=False, index=True)
+    company_id: Mapped[int] = mapped_column(Integer, ForeignKey("a76.company.id"), nullable=False, index=True)
 
 
 class PedimentoRelatedMixin(TenantScopedMixin):