refactor: Restructure project into a scalable package layout

This commit undertakes a major architectural refactoring to improve project organization, scalability, and maintainability

interbend/__init__.py

@@ -0,0 +1,11 @@
+from flask import Flask
+from config import Config
+
+def create_app(config_class=Config):
+    app = Flask(__name__)
+    app.config.from_object(config_class)
+
+    from interbend.routes import main_bp
+    app.register_blueprint(main_bp)
+
+    return app