Adding a redux store in which will be stored data about user's policies, and action which will be dispatched on acknowledgment.
Context in [ENG-2363](https://linear.app/comm/issue/ENG-2363/handle-policy-acknowledgment-via-http-request).
There is a minor thing with this approach, there is possibility to dispatch the action multiple times, more in [ENG-2431](https://linear.app/comm/issue/ENG-2431/enhancement-to-policy-acknowledgment-mechanism).