feat: add support for connected accounts

[pmalouin]

No description provided.

[priley86]

• verified both examples to work w/ my GenAI tenant locally
• discussed upcoming changes in auth0 docs-v2 repo (captured in: https://auth0team.atlassian.net/browse/AIDX-240)
• known limitation about loss of message history in Hono + React SPA example after step up flow is acceptable to the business as of now (and could be improved in future w/ popup flow vs redirect flow)

[priley86]

what's interesting here is that i've tested my SPA to work when it does have this setting (Allow Refresh Token Rotation) enabled, however on the Next.js chatbot example (and in that README here), we have it disabled. It's an interesting diff we should look into.

[priley86]

• tested react-langgraph-api flow to work as documented here
• noted redirect behavior is less than ideal w/ existing step-up auth flow, and popup behavior is preferred. (scheduled for future improvements)

Changes look ready here and happy to approve after auth0 next.js + auth0 spa SDKs have been updated to target versions.