docs(a11y): add accessiblity report

Author: codebender828

packages/chakra-ui-core/src/CButtonGroup/CButtonGroup.js

@@ -73,6 +73,7 @@ const CButtonGroup = {
       attrs: {
         d: 'inline-block',
         ...data.attrs,
+        role: 'group',
         'data-chakra-component': 'CButtonGroup'
       },
       on: listeners

packages/chakra-ui-core/src/CButtonGroup/accesibility.md

@@ -0,0 +1,16 @@
+# ButtonGroup | Accessibility ♿️
+
+This report is adapted to list the [WAI-ARIA Authoring practices for buttons](https://www.w3.org/TR/wai-aria-practices-1.2/#button) supported by Chakra UI for the `CButtonGroup` component.
+
+### Description
+The `CButtonGroup` component provides a wrapping container with `role="group"` for multiple children button elements.
+
+#### Components
+`@chakra-ui/vue` exports 1 ButtonGroup related components:
+- `CButtonGroup`
+
+
+### `CButton` WAI-ARIA Roles, States, and Properties:
+- The `CButtonGroup` component contains the `role="group"` for a group of child `CButton` components grouped together.
+
+Noticed a bug or inconsistency with this component? [Open an issue](https://github.com/chakra-ui/chakra-ui-vue/issues/new/choose)