Posture check: Azure Application Gateway does not have the Web application firewall (WAF) enabled
Query: ```config from cloud.resource where cloud.type = 'azure' AND api.name = 'azure-application-gateway' AND json.rule = (['properties.webApplicationFirewallConfiguration'] does not exist and ['properties.firewallPolicy'] does not exist) or (['properties.webApplicationFirewallConfiguration'].enabled is false and ['properties.firewallPolicy'] does not exist)```