[docs] Add migration to DataGrid v6 page

docs/data/data-grid/getting-started/migration-v5.md

@@ -0,0 +1,58 @@
+# Migration from v5 to v6
+
+<p class="description">This guide describes the changes needed to migrate from v5 to v6.</p>
+
+## Start using the alpha release
+
+In `package.json`, change the version of the data grid package to `next`.
+
+```diff
+-"@mui/x-data-grid": "latest",
++"@mui/x-data-grid": "next",
+```
+
+Using `next` ensures that it will always use the latest v6 alpha release, but you can also use a fixed version, like `6.0.0-alpha.0`.
+
+## Breaking changes
+
+Since v6 is a major release, it contains some changes that affect the public API.
+These changes were done for consistency, improve stability and make room for new features.
+Below are described the steps you need to make to migrate from v5 to v6.
+
+:::info
+The list is currently empty, but as we move forward with development during the alpha and beta phases, we'll feed this page with all changes in the API.
+:::
+
+<!--
+### CSS classes
+
+TBD
+
+### Virtualization
+
+TBD
+
+### Removed props
+
+TBD
+
+### State access
+
+TBD
+
+### `apiRef` methods
+
+TBD
+
+### Columns
+
+TBD
+
+### Other exports
+
+TBD
+
+### Removals from the public API
+
+TBD
+-->

docs/data/pages.ts

@@ -23,6 +23,7 @@ const pages: MuiPage[] = [
       { pathname: '/x/react-data-grid/demo' },
       { pathname: '/x/react-data-grid/getting-started' },
       { pathname: '/x/react-data-grid/migration-v4', title: 'Migration from v4' },
+      { pathname: '/x/react-data-grid/migration-v5', title: 'Migration from v5' },
       { pathname: '/x/react-data-grid/layout' },
       {
         pathname: '/x/react-data-grid/columns',

docs/pages/x/react-data-grid/migration-v5.js

@@ -0,0 +1,11 @@
+import * as React from 'react';
+import MarkdownDocs from 'docs/src/modules/components/MarkdownDocs';
+import {
+  demos,
+  docs,
+  demoComponents,
+} from 'docsx/data/data-grid/getting-started/migration-v5.md?@mui/markdown';
+
+export default function Page() {
+  return <MarkdownDocs demos={demos} docs={docs} demoComponents={demoComponents} />;
+}