create database for broadcast

added database structure for running broadcast function

driver/database/__init__.py

@@ -0,0 +1,29 @@
+import os
+
+import re
+
+from sqlalchemy import create_engine
+
+from sqlalchemy.ext.declarative import declarative_base
+
+from sqlalchemy.orm import scoped_session, sessionmaker
+
+from config import DATABASE_URL as db
+
+if db and db.startswith("postgres://"):
+
+    app = db.replace("postgres://", "postgresql://", 1)
+
+BASE = declarative_base()
+
+def start() -> scoped_session:
+
+    engine = create_engine(app)
+
+    BASE.metadata.bind = engine
+
+    BASE.metadata.create_all(engine)
+
+    return scoped_session(sessionmaker(bind=engine, autoflush=False))
+
+SESSION = start()