chore(modules): add a new module for golden signal alerts based on newrelic_nrql_alert_condition

[shashank-reddy-nr]

Description

As the GitHub issue states https://github.com/newrelic/terraform-provider-newrelic/issues/2686, the current module we have for golden signal alerts in the Terraform Provider’s repository is obsolete, as it comprises references to legacy alert conditions which are now deprecated. Hence, the ask is to have references of legacy alert conditions in the module moved to newrelic_nrql_alert_condition.

Type of change

Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

Checklist:

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• [x] My commit message follows conventional commits
• [x] My code is formatted to Go standards
• [x] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes. Go here for instructions on running tests locally.

[pranav-new-relic]

@shashank-reddy-nr please also run a terraform fmt on both of these modules which would help format Terraform configuration in all *.tf files

[pranav-new-relic]

@shashank-reddy-nr let's call the module golden-signal-alerts-new and not new-golden-signal-alerts