[TO-DO] Add a function to collect (redeem) credit card cashback rewards

[gboudreau]

Now that credit cards' cashback rewards are not collected automatically, a new function to collect those, to be able to automate this, would be helpful.
The web app doesn't have this functionality, so one would need to trace the query used by the mobile app to understand how we can add it to this library.
Will try to do that later tonight.

[gboudreau]

Looks like I'm unable to proxy the traffic from the WS mobile app to my desktop for inspection. I tried to decompile & modify the Android app, but the app gives an error when I try to login.
On iOS, setting up a proxy, the WS app return an error about unsecure traffic, and just won't work. I think their app uses certificate pinning.