enable access to aai refresh token
Each time a aai access token is needed, we need to authenticate again to obtain a new access token. However, this is not necessary since we can use the refresh token, provided one is available to obtain a new access_token.
- initialise OAuth2AuthorizedClientService by using constructor instead of autowiring
- add a GET controller and a link that can be use to get the refresh token
- add to the list of scope
offline_accessto request for the refresh token from the auth server (that is Helmholtz AAI server).
Result: Refresh token can now be obtain
Target: master Acked-by: Review-at: https://gitlab.hzdr.de/hifis-technical-platform/helmholtz-marketplace-server/-/merge_requests/12