[DOC-9723] Update Terraform page for new plans

[mdlinville]

[DOC-9723] Update Terraform page for new plans

• Update page title (but not filename) with an eye toward covering more than cluster creation on the page in future
• Update page variables and filter tabs
• Split Serverless into Basic and Standard
• Removed the tfvars construct in favor of directly copying the examples from https://github.com/cockroachdb/terraform-provider-cockroach/blob/398102111d6e696a4e2c034077f812cd1917f675/examples/resources/cockroach_cluster/resource.tf with the following changes:
  • Replace machine_type field in Advanced example with provisioned_vcpus, per thread.
  • Subsequently replaced provisioned_vcpus with provisioned_virtual_cpus and num_vcpus with num_virtual_cpus, per @andy-kimball
  • Removed output that will necessarily be different from the reader's actual experience and presents maintenance challenges over time, with little benefit to the reader.
• Restructured Markdown source a bit for ease of maintenance

Out of scope for this PR: Changing from Basic to Standard using Terraform. Coming subsequent to this PR.

[github-actions]

Files changed:

• src/current/_includes/v24.2/sidebar-data/cloud-deployments.json
• src/current/cockroachcloud/provision-a-cluster-with-terraform.md

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[andy-kimball]

LGTM

[mikeCRL]

LGTM!