Add tags field to Filestore Instances for TagsR2401

[abd-goog]

Add tags field to instance resource to allow setting tags on instance resources at creation time.
Part of b/364841739

Release Note Template for Downstream PRs (will be copied)

filestore: added `tags` field to `filestore_instance` to allow setting tags for instances at creation time

[github-actions]

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@c2thorn, a repository maintainer, has been assigned to review your changes. If you have not received review feedback within 2 business days, please leave a comment on this PR asking them to take a look.

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[c2thorn]

Hi @abd-goog

Tomorrow, the Magic Modules repository is scheduled to undergo a language migration from Ruby to Go. You can view more details about this in our announcement here: hashicorp/terraform-provider-google#19583 (or go/mm-migration-announcement if you are a Googler)

This open pull request may become incompatible due to most YAML and .erb files converting to Go-compatible files.

Our team (Magic Modules repository maintainers) has tooling to automatically convert changes to the new language, and we can prepare a new commit for this pull request that is compatible with the migration.

In order to push the new changes to your pull request, we would need to force push the commit to your fork's branch. Our tooling saves a backup branch before converting, so we could rollback or open a new pull request if needed. We would also work with you and the PR reviewer in the event additional changes are needed.

You also have the option to update the pull request yourself after the migration. You can view a preview branch and updated documentation related to the migration changes.

We will take no action until we have your explicit permission to push changes to your fork's branch used for this pull request. Let me or your reviewer know if you have any further questions!

[c2thorn]

It has been several weeks and this PR is likely too far out of date to convert with our tooling. Please disregard my previous comment and recreate this PR in the new format.