compute_region_commitment

[modular-magician]

fixes #6734

this resource cannot be deleted, and lasts for a year+ which makes testing difficult in CI. I've tested locally and will request a manual removal of all CUDs created in my test project. Logs of successful test runs will be sent to the reviewer.

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• Ensured that all new fields I added that can be set by a user appear in at least one example (for generated resources) or third_party test (for handwritten resources or update tests).
• Generated Terraform providers, and ran make test and make lint in the generated providers to ensure it passes unit and linter tests.
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Release Note Template for Downstream PRs (will be copied)

`google_compute_region_commitment`

Derived from GoogleCloudPlatform/magic-modules#7521

[github-actions]

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