Add initial Loading Doc

packages/extras/docs/components/Loading.md

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+import { Required } from '@site/src/components';
+
+# Carousel
+
+AMA Provides an accessible `<Loading ... />` component that auto focuses and announces the accessibility label and busy state. This component wraps the [React Native ActivityIndicator](https://reactnative.dev/docs/activityindicator) however AMA also provides a `<LoadingWrapper >` component that can be used to wrap any loading component or skeleton loader.
+
+## Example