Added simple TOTP Two Factor Authentication

[Ponkhy]

I added a simple TOTP Two Factor Authentication.
Tested it with Google Authenticator, Authy, Bitwarden.
I also tried to use npm packages with zero or just a few dependencies to keep it small as possible.
It's build in the way that every user can enable or disable it by themselves.

I didn't chanage the database version yet, so keep that in mind in case you want to test it.
Suggestions and corrections are welcome as usual ^^

Here a few screenshots:

[louislam]

Awesome! I always thought implementing 2FA need 3rd party services. Turn out it is not required.

[Saibamen]

Some grammar

[louislam]

I added a space in the name. Tested OK with Google Authenticator, Authy and MS Authenticator.

I just don't understand how to generate a token in Bitwarden after scanned the qr code. Could you test Bitwarden again, thanks!

[Ponkhy]

Jup still works great with Bitwarden!
Ohh you need a Bitwarden Premium License to be able to generate a 2FA token.

Unfortunatly when i click on the "2FA Settings" button i get this error and can't open them, can't figure out why it's the case.
It only appears when i access Uptime Kuma on port 3001, but when i also start the frontend as dev port 3000 it works fine.

[Saibamen]

@Ponkhy: 3001 is server. 3000 is frontend

You see some front app in 3001, because of npm run build (could be outdated). You should use only 3000

NOTE: Make sure you have the latest patch release (z in x.y.z) of NPM packages. Delete node_modules folder and run npm install

[Ponkhy]

Ohh ahah, yea i forgot that the server prolly still used the build version without the TwoFADialog.vue, Thank you ^^°