feat: Add ssm_parameter_version_labels resource

[pazderak]

Rollback Plan

If a change needs to be reverted, we will publish an updated version of the library.

Description

This is new resource for Systems Manager Parameter Store, managing the labels for parameter versions.

Relations

Closes #9102

References

https://docs.aws.amazon.com/systems-manager/latest/APIReference/API_LabelParameterVersion.html
https://docs.aws.amazon.com/systems-manager/latest/APIReference/API_UnlabelParameterVersion.html

Output from Acceptance Testing

% make testacc TESTS=TestAccSSMParameterVersionLabels PKG=ssm

...

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