Request: Please add some information to the firewall deletion popup

[Snobs76]

• [ x ] I have read the contributing guide lines at https://github.com/opnsense/core/blob/master/CONTRIBUTING.md
• [ x ] I am convinced that my issue is new after having checked both open and closed issues at https://github.com/opnsense/core/issues?q=is%3Aissue

Describe the solution you like

If a description field at firewall rules is filled, please add the the description from this rule into the warning popup before the single rule will be deleted. It would be shows up that you hit the delete button at the correct single line.