Preserve window state when toggling popups

e.g. size

modules/ui/popup/config.el

@@ -20,6 +20,13 @@ Modifying this has no effect, unless done before ui/popup loads.")
     (no-other-window . t))
   "The default window parameters.")
 
+(defvar +popup-window-state-alist
+  '((total-width . window-width)
+    (total-height . window-height)
+    (parameters . window-parameters))
+  "An alist mapping `window-state-get' entries to display-buffer alist entries.
+Used by `+popup--normalize-alist'.")
+
 (defvar +popup-margin-width 1
   "Size of the margins to give popup windows. Set this to nil to disable margin
 adjustment.")