This change adds a new request interceptor to add client data via the Auth0-Client header, similar to the UserAgentRequestInterceptor.

The header value is required to be a Base64 URL-encoded string of JSON with the following structure:

{
  "name":  "okta-spring-boot", // required
  "version": "3.0.5", // required
  "env": { // optional, used for platform or dependency versions
    "java": "17",
    ...
  }
}