[lib] client function to call server and acknowledge policy

Summary:
This function will be called when user will hit I accept and will send request to server with policy accepted by user.

Context in ENG-2363.

Test Plan: Call this function and check if proper action was dispatched and value on keyserver db was updated

Reviewers: tomek, atul

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D5828