Bug:2009481: [ci full] CLI jexl evaluator command

[yashikakhurana]

Added jexl command to nimbus-cli for evaluating JEXL targeting expressions against the app context. Useful for testing and debugging targeting expressions on iOS and Android.

• Evaluate a simple expression
  nimbus-cli --app fenix --channel developer eval-jexl "locale == 'en-US'"

• Test version comparison
  nimbus-cli --app firefox_ios --channel beta eval-jexl "app_version|versionCompare('120.0') >= 0"

• Copy deeplink to clipboard for manual testing
  nimbus-cli --app fenix --channel developer eval-jexl "is_default_browser" --pbcopy

Pull Request checklist

• Breaking changes: This PR follows our breaking change policy
  • This PR follows the breaking change policy:
    • This PR has no breaking API changes, or
    • There are corresponding PRs for our consumer applications that resolve the breaking changes and have been approved
• Quality: This PR builds and tests run cleanly
  • Note:
    • For changes that need extra cross-platform testing, consider adding [ci full] to the PR title.
    • If this pull request includes a breaking change, consider cutting a new release after merging.
• Tests: This PR includes thorough tests or an explanation of why it does not
• Changelog: This PR includes a changelog entry in CHANGELOG.md or an explanation of why it does not need one
  • Any breaking changes to Swift or Kotlin binding APIs are noted explicitly
• Dependencies: This PR follows our dependency management guidelines
  • Any new dependencies are accompanied by a summary of the due diligence applied in selecting them.

[yashikakhurana]

@freshstrangemusic added retry logic and updated the use eval-jexl and also tested using simulator

changes done

[yashikakhurana]

ios pr is also up here mozilla-mobile/firefox-ios#31654