Add `technology` field to `implemented_by` JSON to indicate whether an endpoint is implemented using lift or http4s. The field is included only when `includeTechnologyInResponse` is true, which is set for API versions 6.0.0 and 7.0.0. This helps API consumers understand the underlying implementation technology.
Update tests to verify technology field presence/absence based on API version. Also improve test setup robustness by making user and account creation idempotent, and update build dependencies to support http4s and pekko.
