feat: add compute_regional_template_create/get/delete

[gryczj]

Description

Fixes #

Note: Before submitting a pull request, please open an issue for discussion if you are not associated with Google.

Checklist

• [x] I have followed guidelines from CONTRIBUTING.MD and Samples Style Guide
• [x] Tests pass: npm test (see Testing)
• [x] Lint pass: npm run lint (see Style)
• [ ] These samples need a new API enabled in testing projects to pass (let us know which ones)
• [ ] These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• [x] This pull request is from a branch created directly off of GoogleCloudPlatform/nodejs-docs-samples. Not a fork.
• [ ] This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• [ ] This sample adds a new sample directory, and I created GitHub Actions workflow for this sample
• [ ] This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• [x] Please merge this PR for me once it is approved

[snippet-bot[bot]]

Here is the summary of changes.

You are about to add 3 region tags.

- [compute/create-instance-templates/createRegionalTemplate.js:20](https://github.com/GoogleCloudPlatform/nodejs-docs-samples/blob/5d2024e9d42a53fda27933ccf9ffb25067b68774/compute/create-instance-templates/createRegionalTemplate.js#L20), tag `compute_regional_template_create` - [compute/create-instance-templates/deleteRegionalTemplate.js:20](https://github.com/GoogleCloudPlatform/nodejs-docs-samples/blob/5d2024e9d42a53fda27933ccf9ffb25067b68774/compute/create-instance-templates/deleteRegionalTemplate.js#L20), tag `compute_regional_template_delete` - [compute/create-instance-templates/getRegionalTemplate.js:20](https://github.com/GoogleCloudPlatform/nodejs-docs-samples/blob/5d2024e9d42a53fda27933ccf9ffb25067b68774/compute/create-instance-templates/getRegionalTemplate.js#L20), tag `compute_regional_template_get`

---

This comment is generated by snippet-bot. If you find problems with this result, please file an issue at: https://github.com/googleapis/repo-automation-bots/issues. To update this comment, add snippet-bot:force-run label or use the checkbox below:

• [ ] Refresh this comment

[gryczj]

Please, check and merge after: https://github.com/GoogleCloudPlatform/nodejs-docs-samples/pull/3868. Issues with tests need to be resolved first.

[gryczj]

Pipeline should be fixed after merging https://github.com/GoogleCloudPlatform/nodejs-docs-samples/pull/3868