fix: add validator for autoplay field; add autoplay field to doc (#1102)

Author: benax-se

.storybook/stories/documentation/Types.mdx

@@ -56,6 +56,7 @@ import { Meta } from '@storybook/blocks';
 - [`video?: Video` — Video](#Video)
 - `youtube?: url` — Link to a video on YouTube
 - `videoIframe?: url` — Link to a video iframe
+- `autoplay?: boolean` — Enabling autoplay for videoIframe or youtube. Default false
 - `height?: number` — Block height
 - `previewImg?: string`
 - `dataLens?: string |` [DataLens](#DataLens)

src/schema/validators/common.ts

@@ -610,6 +610,9 @@ export const MediaProps = {
     videoIframe: {
         type: 'string',
     },
+    autoplay: {
+        type: 'boolean',
+    },
     parallax: {
         type: 'boolean',
     },