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

utils/database/tables/statistics_meta.py

@@ -0,0 +1,22 @@
+"""SQLAlchemy model for the 'statistics_meta' table in the Home Assistant PostgreSQL database."""
+
+from sqlalchemy import Column, BigInteger, String, Boolean, SmallInteger
+
+from .base import Base
+
+
+class StatisticsMeta(Base):
+    """SQLAlchemy model for the 'statistics_meta' table."""
+
+    __tablename__ = "statistics_meta"
+    __table_args__ = {"schema": "public"}
+
+    id = Column(BigInteger, primary_key=True, autoincrement=True)
+    statistic_id = Column(String(255), nullable=True)
+    source = Column(String(32), nullable=True)
+    unit_of_measurement = Column(String(255), nullable=True)
+    unit_class = Column(String(255), nullable=True)
+    has_mean = Column(Boolean, nullable=True)
+    has_sum = Column(Boolean, nullable=True)
+    name = Column(String(255), nullable=True)
+    mean_type = Column(SmallInteger, nullable=False)