Simplify FuseboxReactDevToolsDispatcher diagram and document inline (#46737)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/46737

Changelog: [Internal]

Reviewed By: hoxyq

Differential Revision: D63637626

fbshipit-source-id: 314ec6dc6eff8d458beba84e49d5aaca3d192087

packages/react-native/src/private/debugging/.npmignore

@@ -1 +1 @@
-assets
+__docs__

packages/react-native/src/private/debugging/README.md

@@ -1,12 +0,0 @@
-# Fusebox Runtime
-
-## What is Fusebox?
-"Fusebox" is the internal codename for the new React Native debugger stack based on Chrome DevTools.
-
-## Architecture for React DevTools communication
-
-### Frontend to Backend communication
-![Frontend to backend communication diagram](./assets/frontend-to-backend.excalidraw-embedded.png)
-
-### Backend to Frontend communication
-![Backend to frontend communication diagram](./assets/backend-to-frontend.excalidraw-embedded.png)

packages/react-native/src/private/debugging/setUpFuseboxReactDevToolsDispatcher.js

@@ -62,6 +62,12 @@ export class Domain {
   }
 }
 
+/**
+ * Globally bound object providing a hook for React DevTools runtime API calls
+ * over CDP.
+ *
+ * @see {@link ./__docs__/FuseboxReactDevToolsDispatcher.excalidraw-embedded.png}
+ */
 class FuseboxReactDevToolsDispatcher {
   static #domainNameToDomainMap: Map<DomainName, Domain> = new Map();