Add FlatList doc to AMA

packages/lists/docs/FlatList.mdx

@@ -0,0 +1,48 @@
+import { TalkBackList, Required } from '@site/src/components';
+
+# FlatList
+
+FlatList is an extension of the [React Native FlatList](https://reactnative.dev/docs/flatlist) component, [focused on accessibility](#accessibility-improvements).
+
+## Usage
+
+```jsx
+import { FlatList } from '@react-native-ama/lists';
+
+<FlatList
+  data={items}
+  renderItem={renderItem}
+  keyExtractor={item => item.id}
+  listType="dynamic"
+  singularMessage="%count% item found"
+  pluralMessage="%count% items found"
+/>
+```
+
+## Accessibility Improvements
+
+- On `Android` allows TalkBack to announce **in list**/**out list** or **in grid**/**out of grid**
+- A [dynamic list](./DynamicFlatList.mdx) automatically announces the number of items found when it gets filtered
+
+### TalkBack
+
+<TalkBackList />
+
+To provide this accessibility feature AMA wraps the list in the custom native component: [ListWrapper](./ListWrapper.mdx).
+
+### Dynamic list
+
+A dynamic list must announce the number of items displayed if they change due to filtering. Check [here](../../../website/guidelines/lists-grids.md#number-of-results) for more info.
+
+## Props
+
+### <Required /> `listType`
+
+| Value   | Description                    |
+| ------- | ------------------------------ |
+| dynamic | Renders a [DynamicFlatList](/) |
+| static  | Renders a [StaticFlatList](/)  |
+
+## Related guidelines
+
+- [Lists & Grids](../../../website/guidelines/lists-grids.md)