Ensure running mode is set to AutoStop for AWS Workspaces

AWS Workspace can be configured to AutoStop, which will stop and save apps and data after a period of disconnection. This can help save on cost and help decrease the number of running services that need to be maintained and monitored at a given time. For more information on WorkSpaces running mode, see the AWS documentation.
References:
https://docs.aws.amazon.com/workspaces/latest/adminguide/running-mode.html

In AWS Console -

1. Sign in to the AWS Console and go to the WorkSpaces console.
2. Select Actions, Modify Running Mode Properties.
3. Set the AutoStop Time (hours).

In Terraform -

1. In the aws_workspaces_workspace resource, set the 'running_mode' field to 'AUTO_STOP'.

References:
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/workspaces_workspace