docs: add rules for fastapi route implementation and route tests

Generated-by: aiautocommit

Author: iloveitaly

.cursor/rules/implement-fastapi-routes.mdc

@@ -0,0 +1,3 @@
+The file docstring contains a description of the FastAPI routes we need to implement. Implement these routes.
+
+Avoid implementing any Stripe logic right now. I will do that later. Leave TODOs for this and other areas where you are very unsure of what to do.

.cursor/rules/python-route-tests.mdc

@@ -0,0 +1,9 @@
+---
+globs: tests/routes/**/*.py
+alwaysApply: false
+---
+
+## Python Route Tests
+
+- Polyfactory is the [factory](tests/factories.py) library in use. `ModelNameFactory.build()` is how you generate factories.
+- Use `assert_status(response)` to check the response of a client