[feat, UX] Support the virtualKeyboard on non touch-device (#3796)

* [VirtualKeyboard] Add support for keynaviguation

Also rename the variable "layout" to "keyboard_layout" because conflict
with the layout from the focusmanager

* Make the goto dialog compatible with key naviguation

My solution is to change the order of the widget. The last one will the
virtualkeybard so it catch all the keybinding, and below it, make the
dialog "is_always_active = true" so it can receive touch event.

* Correctly show the virtual keyboard on dpad devices

* change the order to call the virtualKeyboard so it end up on top

* Handle the multi input dialog

* Support reopening the virtualKeyboard by the Press key

* add check focusmanager

* Fix https://github.com/koreader/koreader/issues/3797

* MultiInputDialog : Now work on non touch-device

* Set the virtualkeyboard to be a modal widget

* Fix the layout in multiinputwidget

* Fix for the various combination of
hasKeys,hasDpad,isTouchDevice

* [Focusmanager] Better handling of malformed layout

frontend/apps/reader/modules/readerbookmark.lua

@@ -482,8 +482,8 @@ function ReaderBookmark:renameBookmark(item, from_highlight)
             }
         },
     }
-    self.input:onShowKeyboard()
     UIManager:show(self.input)
+    self.input:onShowKeyboard()
 end
 
 function ReaderBookmark:toggleBookmark(pn_or_xp)