Add security rules

[camstuart]

Hi Jeff, Great course!!

Would it be possible to share the rules you used for firestore and storage please?

[lryjnks]

rules_version = '2';

// Craft rules based on data in your Firestore database
// allow write: if firestore.get(
// /databases/(default)/documents/users/$(request.auth.uid)).data.isAdmin;
service firebase.storage {
match /b/{bucket}/o {
match /users/{userId}/{allPaths=**} {
allow read;
allow write: if userId == request.auth.uid;
}
}
}