feature(list_resources): list resources per backend

[aleksbykov]

Hydra list-resources show resources by test-id or user for all backend supported by sct. Usually the only one backend type is used. Searching on another backends could take time. Added support to provide to hydra list-resources optional parameter backend-type which specify on which backend search resources and list them. by default backend-type is all, and run as previously, list resources from all backends if provide specific backend type [aws, gce, azure, eks, docker] list resources display resources only on specific backend

PR pre-checks (self review)

• [ ] I followed KISS principle and best practices
• [ ] I didn't leave commented-out/debugging code
• [ ] I added the relevant backport labels
• [ ] New configuration option are added and documented (in sdcm/sct_config.py)
• [ ] I have added tests to cover my changes (Infrastructure only - under unit-test/ folder)
• [ ] All new and existing unit tests passed (CI)
• [ ] I have updated the Readme/doc folder accordingly (if needed)