feat: stabilize KYC, international assets and multi-currency schema

- Split mother's name in KYC (last/first)
- Added mileage_unit and fuel_type to Assets
- Expanded AssetCost for international VAT and original currency
- Fixed SQLAlchemy IndexError in asset catalog lookup
- Added exchange_rate and ratings tables to models

backend/app/models/address.py

@@ -0,0 +1,45 @@
+import uuid
+from sqlalchemy import Column, String, Integer, ForeignKey, Text, DateTime
+from sqlalchemy.dialects.postgresql import UUID as PG_UUID
+from sqlalchemy.sql import func
+from app.db.base_class import Base
+
+class GeoPostalCode(Base):
+    __tablename__ = "geo_postal_codes"
+    __table_args__ = {"schema": "data"}
+
+    id = Column(Integer, primary_key=True)
+    country_code = Column(String(5), default="HU")
+    zip_code = Column(String(10), nullable=False)
+    city = Column(String(100), nullable=False)
+
+class GeoStreet(Base):
+    __tablename__ = "geo_streets"
+    __table_args__ = {"schema": "data"}
+
+    id = Column(Integer, primary_key=True)
+    postal_code_id = Column(Integer, ForeignKey("data.geo_postal_codes.id"))
+    name = Column(String(200), nullable=False)
+
+class GeoStreetType(Base):
+    __tablename__ = "geo_street_types"
+    __table_args__ = {"schema": "data"}
+
+    id = Column(Integer, primary_key=True)
+    name = Column(String(50), unique=True, nullable=False)
+
+class Address(Base):
+    __tablename__ = "addresses"
+    __table_args__ = {"schema": "data"}
+
+    id = Column(PG_UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    postal_code_id = Column(Integer, ForeignKey("data.geo_postal_codes.id"))
+    street_name = Column(String(200), nullable=False)
+    street_type = Column(String(50), nullable=False)
+    house_number = Column(String(50), nullable=False)
+    stairwell = Column(String(20))
+    floor = Column(String(20))
+    door = Column(String(20))
+    parcel_id = Column(String(50)) # HRSZ
+    full_address_text = Column(Text)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())