[Feature] Web UI controls for filament load/unload + non-blocking loading message

[jnnkls]

Hey folks,

first of all, awesome project – really enjoying it so far!

One thing I’d love to see is a way to trigger filament load and unload directly via the Web UI, or for example through the Home Assistant integration by danielcherubini.

In that context, it would also be great if the filament loading message wasn’t blocking, or at least could be confirmed through a similar interface.

Best regards,
Jani