Noble forwarding addrs

[grod220]

Implement the web version in Prax of penumbra-zone/penumbra#4878. Noble launching feature Early Nov.

Follows this userflow:

Getting sequence numbers

There are three RPC responses to the register call:

1. unregistered, no deposits (failure 1)
2. registered already (failure 2)
3. unregistered, deposit exists (success)

Should use binary search to find the next available sequence number for user. Prax can store it directly and the latest sequence number can be found on demand with at most 16 RPC requests

Let's say someone has already generated 50 addresses. Any sequence <=50 will result in an RPC success (aka already deposited). Anything >50 will return an error. So we keep splitting the address space in half, checking for success/error until we come down to two (50 success, 51 error).

Proposed design

States to consider:

• If toggling the noble one, should replace the identicon with Noble icon + Noble address
• Likely should ditch the incognito icons
• Have a disable UI state so two can't be toggled at once
• Requires refactoring this component
• Needs loading/loaded/error states

[TalDerei]

maybe this should be moved back into the backlog / blocked – according to henry, "forwarding addresses may have slipped schedule and might be pushed to next year."