missing v3 managers

[krismarc]

I'd like to have all or at least most of resources covered. At least their class declarations that would abstract EntityManager so it would let me list/get resources and it would inherit pagination support for them. Additional methods are not really needed at this point like CREATE/UPDATE/DELETE or other more atomic/custom methods that CF api provides.

routes
droplets
packages
audit events
organization quotas
stacks

Basically just this for missing resources:

from typing import TYPE_CHECKING

from cloudfoundry_client.v3.entities import Entity, EntityManager

if TYPE_CHECKING:
    from cloudfoundry_client.client import CloudFoundryClient


class <missing_resource>Manager(EntityManager):
    def __init__(self, target_endpoint: str, client: "CloudFoundryClient"):
        super(<missing_resource>Manager, self).__init__(target_endpoint, client, "/v3/<resource_type>")