Some messages (relm4 component's input commands) were renamed
Added `UpdateLauncherState` message to, well, update launcher state.
By calling this status page will appear with information about
current status getting progress
Added some new error messages. Before, heavy tasks
were sending errors only to tracing logs. Now they also will generate toast messages
Added patch applying functionality to the main button.
Also made main window disappear when the game is running (like it works now in GTK launcher)
