[openstreetmap/openstreetmap-website] Add opional two-factor authentication for user accounts (Issue #3476)

[grrrrr]

### Description

This was originally asked in #979 but was closed in 2015 due to lack of support.   I would like to re-address this given the time passed, coming up on 7 years, and hopefully more capacity is available.

It would be very useful to get [TOTP](https://en.wikipedia.org/wiki/Time-based_One-time_Password_Algorithm) based support on the website so that users and OSM volunteers can add an additional layer of protection to their accounts

### Screenshots

_No response_

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