fix: crash when deleting hosts with only 1 item as well as move to tomlplusplus for config.

[xlanor]

As usual here's a list:

Pertaining to hosts:

• deleting host would crash the entire menu if it was the last item in the scrollview because borealis couldnt figure out where to focus to. I decided to just make anything that needs to redraw the view on that page focus on the find remote host button because I was tired of dealing with it.
• force a redraw of the entire view rather than add things and cause the view tree to panic. likewise for removing things.
• Added little badges for manual hosts too because it looks quite adorable.

Pertaining to settings:

• moved away from .conf to .toml. I don't want to write regex for reading a file in 2025.
• Added a debug tab for me which ironically also makes it really easy for users to check if there's a bug anywhere when writing to conf. This view will always read from file just in case there's a bug with the in-memory state.
• added a wol retry for manual hosts, because we dont auto discover them and dont know their status
• Properly propagate global settings for res/fps to hosts.

I have not tested on autodiscovered hosts at all today because I was busy, so I hope I didnt break anything there