Move winum to ui/window-select module

And update its README

modules/ui/window-select/config.el

@@ -19,3 +19,21 @@
   (setq aw-keys '(?a ?s ?d ?f ?g ?h ?j ?k ?l)
         aw-scope 'frame
         aw-background t))
+
+
+(def-package! winum
+  :when (featurep! +numbers)
+  :after-call (doom-switch-window-hook)
+  :config
+  (winum-mode +1)
+  (map! :map evil-window-map
+        "0" #'winum-select-window-0-or-10
+        "1" #'winum-select-window-1
+        "2" #'winum-select-window-2
+        "3" #'winum-select-window-3
+        "4" #'winum-select-window-4
+        "5" #'winum-select-window-5
+        "6" #'winum-select-window-6
+        "7" #'winum-select-window-7
+        "8" #'winum-select-window-8
+        "9" #'winum-select-window-9))