Advertise booster-http identity in IPNI advertisements

[willscott]

Checklist

• [X] This is not a question or a support request. If you have any boost related questions, please ask in the discussion forum.
• [X] This is not a new feature request. If it is, please file a feature request instead.
• [X] I have searched on the issue tracker and the discussion forum, and there is no existing related issue or discussion.
• [X] I am running the Latest release, or the most recent RC(release canadiate) for the upcoming release or the dev branch(master), or have an issue updating to any of these.

Boost component

• [X] boost daemon - storage providers
• [ ] boost client
• [ ] boost UI
• [ ] boost data-transfer
• [X] boost index-provider
• [ ] Other

Improvement Suggestion

Currently, extended providers used by boost does not translate to the keypair identity within booster-http. As that identity becomes meaningful, as it will as https://github.com/filecoin-project/boost/issues/1610 is addressed, we will need the same delegation to occur as is present for booster-bitswap.