Add Redux

Please run yarn install, or what-have-you, before testing. It will install @reduxjs/toolkit. Please see the tutorials.

• Track each level's number, doors, critters, and cages
• Use non-react-redux functions, such as store.dispatch, outside React components but the React app store can still be set in index.tsx
• Trigger an action when a door is unlocked
• Set the level whenever it is loaded
• Reset the door data when a level is reloaded
• Add captivity objects as critters and cages are loaded and remove them as they are released
• See the code UML for the Redux Store diagram