refactor(app): move react components to react codebase [EE-3179] (#6971)

app/react/components/Widget/Widget.tsx

@@ -0,0 +1,19 @@
+import { createContext, PropsWithChildren, useContext } from 'react';
+
+const Context = createContext<null | boolean>(null);
+
+export function useWidgetContext() {
+  const context = useContext(Context);
+
+  if (context == null) {
+    throw new Error('Should be inside a Widget component');
+  }
+}
+
+export function Widget({ children }: PropsWithChildren<unknown>) {
+  return (
+    <Context.Provider value>
+      <div className="widget">{children}</div>
+    </Context.Provider>
+  );
+}