A chatbot that implements the decision tree

## Tech stack
* React

## Acceptance criteria

- [ ] The chatbot can be easily injected into an external website
- [ ] It correctly reaches the endstate for every possible path
- [ ] It looks nice
- [ ] It submits appropriate analytics data to the backend

## Important
Make sure the JSON schema for the decision tree is the same as the backend. They will likely change over time so make sure you update it in both places.