app: [Windows] don't ignore Min|MaxSize options

The support for minimum and maximum window sizes were broken by a recent
change. Found while investigating #608.

References: https://todo.sr.ht/~eliasnaur/gio/608
Signed-off-by: Elias Naur <mail@eliasnaur.com>

app/os_windows.go

@@ -691,6 +691,8 @@ func (w *window) Configure(options []Option) {
 	cnf.apply(metric, options)
 	w.config.Title = cnf.Title
 	w.config.Decorated = cnf.Decorated
+	w.config.MinSize = cnf.MinSize
+	w.config.MaxSize = cnf.MaxSize
 	windows.SetWindowText(w.hwnd, cnf.Title)
 
 	style := windows.GetWindowLong(w.hwnd, windows.GWL_STYLE)