Docs GridLayout (#365)

* feat(gridlayout): docs

* chore(gridlayout); update config file

* chore(gridlayout): kb nav article

* chore(gridlayout): update config file

* chore(gridlayout): improvements to the overview article

* chore(gridlayout): improvements to the items article

* docs: fix a typo

* chore(gridlayout): final touches

* chore(gridlayout): small improvement to items article

Co-authored-by: Dimo Dimov <961014+dimodi@users.noreply.github.com>

Author: svdimitr

_config.yml

@@ -195,6 +195,8 @@ navigation:
         title: "How To"
      "*grid":
         title: "Grid"
+     "*gridlayout":
+        title: "Grid Layout"
      "*listview":
         title: "ListView"
      "*treelist":
@@ -484,6 +486,7 @@ intro_columns:
       "Media Query": "mediaquery-overview"
       "Card": "card-overview"
       "Stack Layout": "stacklayout-overview"
+      "Grid Layout": "gridlayout-overview"
   -
     title: "Scheduling"
     items:

accessibility/keyboard-navigation.md

@@ -54,6 +54,8 @@ The following list shows the Telerik components that support specific keyboard c
 
 * [Grid](https://demos.telerik.com/blazor-ui/grid/keyboard-navigation) (set `Navigable="true"`)
 
+* GridLayout - not applicable, it is a layout container.
+
 * MaskedTextbox - not applicable, it is a simple input with the standard behavior.
 
 * [Menu](https://demos.telerik.com/blazor-ui/menu/keyboard-navigation)