Consider moving the nested resources

[henribru]

Currently nested resources are defined as nested classes. This is kinda convenient because it means you only need to import the base resource, e.g. you can do from googleapiclient._apis.analytics.v3.resources import AnalyticsResource and then you can get the nested management resource as AnalyticsResource.ManagementResource. It also mirrors how you get that nested resource in your code, i.e. management_resource = analytics_resource.management(). The main issue with this is that it ends up polluting the autocomplete on the resources. For an example, notice how both management and ManagementResource show up here:

The question is if it could it be worth restructuring this in some way to avoid this issue