Add Terraform performance tests for infrastructure validation

[devin-ai-integration]

Summary

This PR adds performance testing infrastructure for the Terraform codebase. It includes:

• A GitHub Actions workflow that runs on push/PR to main and can be triggered manually
• A bash script that measures execution time of Terraform operations (fmt, validate) and collects file statistics
• JSON results output that gets uploaded as a workflow artifact

The tests measure:

• terraform fmt -check execution time (threshold: 2s)
• terraform validate execution time (threshold: 5s) - note: this will be skipped if terraform init hasn't been run
• File parsing metrics (number of .tf files and total lines)

Review & Testing Checklist for Human

• Verify terraform validate behavior: The script will skip validation if terraform init hasn't been run. Consider whether the workflow should run terraform init first (requires provider credentials or mock setup)
• Review thresholds: The hardcoded thresholds (2s for fmt, 5s for validate, 30s for init) may need adjustment based on actual infrastructure complexity
• Test JSON output validity: The bash script manually constructs JSON - verify the output is valid JSON by running the script locally
• Check workflow triggers: Confirm that running on main branch push/PR is the desired behavior

Recommended test plan: Run the workflow manually via workflow_dispatch and verify the results artifact contains valid JSON with expected structure.

Notes

• Link to Devin run: https://partner-workshops.devinenterprise.com/sessions/cf94d817dd244336971fd9b8333d75d7

[devin-ai-integration]

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