Migrate Host api from ceph dasboard module

[arttor]

• See api definition in ceph dashboard open api .
• take this banch as an example
• dashboard module source code https://github.com/ceph/ceph/tree/main/src/pybind/mgr/dashboard

Acceptance Criteria:

• grpc and REST api for ListHosts and GetHost are implemented
• e2e tests for ListHosts and GetHost are implemented
• api is secured with jwt token
• permission check is implemented
• REST api is fully compatible to existing dashboard api