Feature: Create Identity Search in Universal API

[kamescg]

Context

The Universal stack includes an experimental identity standard to support decentralized identifiers and verifiable credentials for all EVM wallet types.

The Dashboard has a rudimentary search function for querying a wallets linked identifier and document.

https://wallet.districtlabs.com/identity/search

Scope

Make the identity search feature better by adding relevant public data to the response data.

• Migrate the search functionality to the apps/api-universal app.
• Fetch public credentials from the api-credentials app and add to the response data.
• Fetch ENS data (name and avatar) to the response data.