Team Operator should support tagging of cloud resources

[ian-flores]

Currently the Team Operator creates cloud resources through the different providers installed on the cluster; however, these resources are created without tags. We should support setting custom tags at the site level so all the corresponding cloud resources contain these tags. These feature will require modification of the Site configuration and the addition of the tags to the different cloud resources like volumes and load balancers.

For reference:

• Site config: https://github.com/rstudio/ptd/blob/330cc5b4efd466b69581f0363cda196d99b5ed1d/team-operator/api/core/v1beta1/site_types.go#L43

• Volumes config: https://github.com/rstudio/ptd/tree/6b3c6719acb6df9f9fcce51733d28255d1a3177c/team-operator/api/product

• Traefik Load Balancer: https://github.com/rstudio/ptd/blob/6d852d004350f03d70846429c6d895fc317b7ad8/ptd/src/ptd/pulumi_resources/traefik.py#L139

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Migrated from rstudio/ptd#1549