Backup App configuration

Problem/Justification
Backup App settings in TrueNAS (not the container settings which are mapped) for import later if needed

Impact
Will allow users to backup all settings configured when deploying an app to be able to import later. Some apps have lots of settings and if you have to remove an app for some reason and readd it, this will make it MUCH easier.

When learning TrueNAS Scale, I had accidentally deleted the wrong container once or twice. Yes, I was not paying attention as close as I should but I was learning the UI. All the settings in the app had to be set again, and having to remember all of them. Some apps can have 20 things to need\want to set.

I tried to print the page but it will only print one page, not everything.