Add method to get approved apps in Portal or ArcGIS Online

[PeaceNlove]

Is your feature request related to a problem? Please describe.
I would like to get the list of approved apps in my Portal or ArcGIS Online
This information is available at /portal/sharing/rest/portals/0123456789ABCDEF/approvedApps

<insert your code here>

Describe the solution you'd like
A list of the approved apps, can be a JSON dict

Describe alternatives you've considered
Right now I do a custom request

Additional context