Adding device support for Signal API

[martingalloar]

References:

• Specs: https://w3c.github.io/webauthn/#sctn-signal-methods
• Chrome:
  • https://developer.chrome.com/docs/identity/webauthn-signal-api
  • https://developer.chrome.com/blog/passkeys-signal-api
• Edge:
  • https://learn.microsoft.com/en-us/deployedge/microsoft-edge-relnote-beta-channel#version-1320295711-november-22-2024:~:text=throw%20InvalidStateError.-,WebAuthn%20Signal%20API,-.%20Allows%20WebAuthn

[timcappalli]

@martingalloar we haven't added this yet as it is not as simple as just the client supporting it. We'll add something at a later date.

[martingalloar]

For sure, 100% understand. I found myself looking for the current client/browser support, and though it would be helpful for others to have it listed there in a more consumable way.

[opotonniee]

Any plan to revisit this PR? It is useful information. Thanks