Provide TOTP UI

[driif]

This issue is a copy of the original - github.com/openbao/openbao/issues/2280

Is your feature request related to a problem? Please describe.

Something that is a hindrance from those coming over from Vault is that Vault has a web UI component for TOTP secret mounts.

The Vault TOTP web UI component allows one to add keys, delete keys, list keys (...obviously), and generate codes (even though the display/generation part is... VERY broken)

It'd be great if OpenBao implemented similar.

Examples from Vault UI:

Navigation

A mount with keys (a single key):

That key's entry:

When going to Generate code >:

Unhiding the code:

Creating (adding) a new key...

Using Vault as the provider ( { ... "generate": true ... } )

{ ... "exported": true ... }

{ ... "exported": false ... }

Expanded TOTP Code Options, explicit period ({ ... "period": "30" ... })

Expanded TOTP Code Options, implicit/default period

Expanded Provider Options

A key after creation with Generate enabled

Using an external party as a provider (a "TOTP import")

Describe the solution you'd like

Web UI management and generation of TOTP secrets.

Describe alternatives you've considered

N/A

Explain any additional use-cases

This helps a ton if Vault is being used in a shared manner with less-technical individuals. "Make this API call", "run this bao/vault command", and/or "Go here and do this in the API explorer" is a lot of friction for less-technical users.

Additional context

N/A