1.4.0-rc5 - support helix test on crd format yamls, fix evaluation model on external LLMs, and allow specifying version in installer

• fix: handle crd format yamls in helix test
• feat(test): add configurable evaluation model for test results
• feat: add --helix-version flag to install script

Full Changelog: 1.4.0-rc4...1.4.0-rc5