[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 ✅

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

Additional details and impacted files

@@            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              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.