Add support for Log Analytics in `logbucket` module

[Daniel Andrade]

TL;DR

Add support for the Log Analytics feature in the logbucket module.

Terraform Resources

- https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/logging_project_bucket_config
- https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/logging_linked_dataset

Detailed design

add a variable for `enable_analytics` with default value `false` as to not affect existing log buckets
also add the option to link the bucket with a BQ dataset

Additional information

• https://cloud.google.com/logging/docs/log-analytics#analytics
• https://cloud.google.com/logging/docs/buckets#gcloud_3
• https://cloud.google.com/logging/docs/buckets#upgrade-bucket