feat: add alertSettings.parallelRunFailureTreshold to CLI [sc-19200]

[maxigimenez]

I hereby confirm that I followed the code guidelines found at engineering guidelines

Affected Components

• [x] CLI
• [ ] Create CLI
• [ ] Test
• [ ] Docs
• [ ] Examples
• [ ] Other

Notes for the Reviewer

Add new alert settings options:

alertEscalationPolicy: {
    parallelRunFailureThreshold: {
      enabled: true,
      percentage: 100,
    }
  }

[shortcut-integration[bot]]

This pull request has been linked to Shortcut Story #19200: Add alertSetting.parallelRunFailureThreshold support to CLI/TF.