feat(boilerplate): Adds custom command for reactotron to show the react native dev menu. (#2541)

Author: markrickert

boilerplate/app/devtools/ReactotronConfig.ts

@@ -3,7 +3,7 @@
  * free desktop app for inspecting and debugging your React Native app.
  * @see https://github.com/infinitered/reactotron
  */
-import { Platform } from "react-native"
+import { Platform, NativeModules } from "react-native"
 
 import AsyncStorage from "@react-native-async-storage/async-storage"
 import { ArgType } from "reactotron-core-client"
@@ -46,6 +46,17 @@ if (Platform.OS !== "web") {
  * NOTE: If you edit this file while running the app, you will need to do a full refresh
  * or else your custom commands won't be registered correctly.
  */
+
+Reactotron.onCustomCommand({
+  title: "Show Dev Menu",
+  description: "Opens the React Native dev menu",
+  command: "showDevMenu",
+  handler: () => {
+    Reactotron.log("Showing React Native dev menu")
+    NativeModules.DevMenu.show()
+  },
+})
+
 Reactotron.onCustomCommand({
   title: "Reset Root Store",
   description: "Resets the MST store",