Accept blue: add options to edit subscriptions

[mschipperheyn]

Is your feature request related to a problem? Please describe.
We need to be able to change, pause, restart and stop subscriptions through the plugin
We would also like to see this action as an order mutation event of some kind so we can track changes back to who and when did that.

We also need to consider the scenario that a restart fails, because I think there is a timeout in place for subscription payment providers that basically leads a paused subscription to become cancelled after time X has passed.
This should prob result in a SubscriptionRestart error

Describe the solution you'd like
A mutation / service method that allows us to access the Update recurring schedules API method (https://docs.accept.blue/api/v2#tag/recurring-schedules/paths/~1recurring-schedules~1%7Bid%7D/patch)

Describe alternatives you've considered
There is no alternative other than doing it manually currently.