refactor: adds new entry point and ORM

app/__init__.py

@@ -0,0 +1,16 @@
+from flask import Flask
+
+from config import Config
+from app.extensions import db
+
+def create_app(config_class=Config):
+    app = Flask(__name__)
+    app.config.from_object(config_class)
+    db.init_app(app)
+    # Initialize Flask extensions here
+
+    # Register blueprints here
+    from app.main import bp as main_bp
+    app.register_blueprint(main_bp)
+
+    return app

app/extensions.py

@@ -0,0 +1,2 @@
+from flask_sqlalchemy import SQLAlchemy
+db = SQLAlchemy()