fix(bara-react): export BaraProvider for React app

Author: nampdn

src/lib/index.ts

@@ -25,4 +25,5 @@ export const useReactApp = (name: string, App: ComponentType, rootHTML: string =
 
 export * from './exports'
 export * from './functions'
-export * from './models'
+export * from './models'
+export * from './context'