Refactored IPC initialization to handle window visibility based on
launch mode (standalone or IPC). Added `IsWindowVisible` P/Invoke
method and implemented IPC commands for window control, monitor
refresh, and settings updates.
Fixed bidirectional pipe creation and adjusted process startup
order in `PowerDisplayProcessManager`. Made `ShowWindow` and
`HideWindow` methods public and added `IsWindowVisible` to
`MainWindow.xaml.cs`.
Introduced activation hotkey parsing and configuration with a
default of `Win+Alt+M`. Exposed hotkey to PowerToys runner and
integrated it into the dashboard with localization and a launch
button. Renamed module DLL for consistency.
