Add Menu component (#3097)

* Add POC menu abstraction

* Better platform handling

* Remove ignore

* Add some menu items

* Add controlled dropdown

* Pass through a11y props

* Ignore uninitialized context

* Tweaks

* Usability improvements

* Rename handlers to props

* Add radix comment

* Ignore known type

* Remove todo

* Move storybook item

* Improve Group matching

* Adjust theming

package.json

@@ -58,6 +58,7 @@
     "@lingui/react": "^4.5.0",
     "@mattermost/react-native-paste-input": "^0.6.4",
     "@miblanchard/react-native-slider": "^2.3.1",
+    "@radix-ui/react-dropdown-menu": "^2.0.6",
     "@react-native-async-storage/async-storage": "1.21.0",
     "@react-native-camera-roll/camera-roll": "^5.2.2",
     "@react-native-clipboard/clipboard": "^1.10.0",
@@ -148,6 +149,7 @@
     "react-avatar-editor": "^13.0.0",
     "react-circular-progressbar": "^2.1.0",
     "react-dom": "^18.2.0",
+    "react-keyed-flatten-children": "^3.0.0",
     "react-native": "0.73.2",
     "react-native-appstate-hook": "^1.0.6",
     "react-native-drawer-layout": "^4.0.0-alpha.3",