Ensure that Web Application Firewall (WAF) enabled for Azure Front Door

Azure Front Door does not have Web Application Firewall (WAF) enabled.

In Terraform -
For Azure Provider versions prior to v4.x (deprecated in favor of azurerm_cdn_frontdoor resources):

1. In the azurerm_frontdoor resource, set the frontend_endpoint.web_application_firewall_policy_link_id to a configured WAF ID.

References:
https://learn.microsoft.com/en-us/azure/frontdoor/
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/frontdoor#frontend_endpoint