[SDTEST-173] Retry new tests - parse remote configuration and fetch unique known tests

[anmarchenko]

What does this PR do? Preparatory work for retrying new tests:

• parse early_flake_detection payload in library settings response, including slow_test_retries
• if retrying new tests is enabled, fetch unique know tests from the backend
• change Remote::Component to configure TestOptimisation and TestRetries in parallel to not execute blocking HTTP requests in sequence

Motivation Retrying new tests to detect flakes early is a next feature planned for Ruby

How to test the change? Unit tests are provided, tested locally with staging

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.95%. Comparing base (12ed0e8) to head (46630f4). Report is 10 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #227 +/- ## ========================================== + Coverage 98.93% 98.95% +0.02% ========================================== Files 262 266 +4 Lines 12440 12754 +314 Branches 560 574 +14 ========================================== + Hits 12307 12621 +314 Misses 133 133 ```

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