Add new app review sections (#1566)

Author: oliwiapolec

src/pages/monetization/app-review-process/index.mdx

@@ -36,6 +36,14 @@ We require using our Design System to keep apps consistent with the Text look &
 
 Refer to the <a href="https://design.livechat.com/" target="_blank" rel="noopener noreferrer">Design System Storybook</a> to learn the details about about apps’ components, colors, and typography.
 
+#### Responsiveness
+
+The design of your apps should be responsive and adapt to the available space. If your app is located in the <a href="https://platform.text.com/docs/extending-agent-app#details-section" target="_blank" rel="noopener noreferrer">Details section</a>, ensure it supports the minimum width of 280px. Ensure that all content remains readable and usable at this width, with no horizontal scrolling or layout breakage.
+
+#### Dark theme support
+
+To ensure a consistent design experience across the product, we require all apps to support both light and dark modes based on the query parameters from the loaded widget URL.
+
 #### Tooltips
 
 If a feature or field requires explanation, add tooltips to guide the user through your application. Make sure the tooltip is brief and easy to read. The information should relate directly to the element it describes and elaborate on what is already visible. Make sure the tooltip doesn't cover the content it's relevant to and that it disappears once the user has interacted with it.