Add support for Hidden SSID

[0lzi]

Add support for adding a hidden SSID, if already available additional documentation for setting up.

[emincangencer]

I have made an implementation for it. But for zbus integrations, iwdrs crate is being used. iwdrs version was 2.0 while impala still uses 1.6. And it seems it isn't ready because of the errors I got. That's why I haven't made a PR yet.

emincangencer@001ccc9

It uses "h" keybinding to open hidden network SSID entry window while in known networks section.

[pythops]

The version 0.1.6 has already everything, it is a just a display update on the impala code. It will be fixed soon as I am working on other feat now