feat: implementacao inicial do sistema LeadRadar

backend/app/extensions.py

@@ -0,0 +1,9 @@
+from flask_sqlalchemy import SQLAlchemy
+from flask_bcrypt import Bcrypt
+from flask_jwt_extended import JWTManager
+from flask_cors import CORS
+
+db = SQLAlchemy()
+bcrypt = Bcrypt()
+jwt = JWTManager()
+cors = CORS()