added support for home assistant postgres database and convenience function to get state of entity

utils/database/tables/schema_changes.py

@@ -0,0 +1,16 @@
+"""SQLAlchemy model for the 'schema_changes' table in the Home Assistant PostgreSQL database."""
+
+from sqlalchemy import Column, BigInteger, Integer, TIMESTAMP
+
+from .base import Base
+
+
+class SchemaChanges(Base):
+    """SQLAlchemy model for the 'schema_changes' table."""
+
+    __tablename__ = "schema_changes"
+    __table_args__ = {"schema": "public"}
+
+    change_id = Column(BigInteger, primary_key=True, autoincrement=True)
+    schema_version = Column(Integer, nullable=True)
+    changed = Column(TIMESTAMP(timezone=True), nullable=False)