Storybook improvements / Design System (#44967)

Co-authored-by: Name <Lana-Lannister@users.noreply.github.com>
Co-authored-by: ahmad abdolsaheb <ahmad.abdolsaheb@gmail.com>

tools/ui-components/.storybook/main.js

@@ -3,6 +3,7 @@ module.exports = {
   addons: [
     '@storybook/addon-links',
     '@storybook/addon-essentials',
+    '@storybook/addon-a11y',
     {
       name: '@storybook/addon-postcss',
       options: {

tools/ui-components/package.json

@@ -31,6 +31,7 @@
     "@rollup/plugin-commonjs": "19.0.2",
     "@rollup/plugin-node-resolve": "13.1.3",
     "@rollup/plugin-typescript": "8.3.0",
+    "@storybook/addon-a11y": "6.4.19",
     "@storybook/addon-actions": "6.4.19",
     "@storybook/addon-docs": "6.4.19",
     "@storybook/addon-essentials": "6.4.19",