feat: allow configuring validators from envvar

[AgustinRamiroDiaz]

Fixes #567

What

Allows configuring validators from the envvar VALIDATORS_CONFIG_JSON

Why

To make deployment easier

Testing done

• unit tests
• tested with VALIDATORS_CONFIG_JSON = '[{"stake": 100, "provider": "openai", "model": "gpt-4o", "amount": 2}]' and VALIDATORS_CONFIG_JSON = ''

Decisions made

• I did it in the same component as the jsonrpc server so that we don't need a new component, which would make deployment more complex
• I didn't use threads to do it since it doesn't take much time, and also threading would've made it more complex given that exception handling across threads is hard

Checks

• I have tested this code
• I have reviewed my own PR
• I have created an issue for this PR
• I have set a descriptive PR title compliant with conventional commits

Reviewing tips

Read unit tests first to understand the behavior

Extra

Maybe this feature is useful in the genlayer CLI? @denishacquin @cristiam86

User facing release notes

Now you can easily start up your validators from the envvar VALIDATORS_CONFIG_JSON

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 17.78%. Comparing base (19cc640) to head (8814540).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #585   +/-   ##
=======================================
  Coverage   17.78%   17.78%           
=======================================
  Files         122      122           
  Lines        9558     9558           
  Branches      283      283           
=======================================
  Hits         1700     1700           
  Misses       7775     7775           
  Partials       83       83           

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

[sonarcloud]

Quality Gate failed

Failed conditions
0.0% Coverage on New Code (required ≥ 80%)

See analysis details on SonarCloud

[AgustinRamiroDiaz]

e2e tests were broken prior to this PR

[github-actions]

🎉 This PR is included in version 0.19.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀