Since we plan to support multiple TOTP apps on the same account, we should allow users to give them a name, like we already do for WebAuthn methods.
- On the form for setting up a TOTP app, add a step between "Step 1: Download a 2FA program" and "Step 2: Scan the QR code" for inputting a name
- Renumber the other steps accordingly
- Display the name of each TOTP app the user has registered on Special:AccountSecurity
