move kafka to threadings and setup database connection

app/__init__.py

@@ -3,6 +3,7 @@ from flask_cors import CORS
 from app.config import Config
 from app.routes import auth_bp, autocall_bp
 from app.errors import method_not_allowed, unsupported_media_type
+from app.extensions import db
 
 
 def create_app():
@@ -23,4 +24,7 @@ def create_app():
     app.register_error_handler(405, method_not_allowed)
     app.register_error_handler(415, unsupported_media_type)
 
+    # Database
+    db.init_app(app)
+
     return app