refactor: Restructure project into a scalable package layout

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

run.py

@@ -0,0 +1,10 @@
+from interbend import create_app
+from interbend.db import init_db
+
+# Initialize the database (creates tables if they don't exist)
+init_db()
+
+app = create_app()
+
+if __name__ == '__main__':
+    app.run(debug=True)