Multithreading Auth

[PrzeG]

Pull Request summary:

Adds support for multithreading authentication, which allows for concurrent requests using the same auth.

Usage example:

from threading import Thread
from catalystwan.session import ManagerSession
from catalystwan.vmanage_auth import vManageAuth
from copy import copy

def print_devices(manager: ManagerSession):
    # using context manager (recommended)
    with manager.login() as session:
        print(session.api.devices.get())

if __name__ =="__main__":

    # 1. Create shared authentication handler for user session
    auth = vManageAuth(username="username", password="password")
    # 2. Configure session with base url and attach authentication handler
    manager = ManagerSession(base_url="https://url:port", auth=auth)
    # 3. Make sure each thread gets own copy of ManagerSession object
    t1 = Thread(target=print_devices, args=(manager,))
    t2 = Thread(target=print_devices, args=(copy(manager),))
    t3 = Thread(target=print_devices, args=(copy(manager),))

    t1.start()
    t2.start()
    t3.start()

    t1.join()
    t2.join()
    t3.join()

    print("Done!")

Checklist:

• [ ] Make sure to run pre-commit before committing changes
• [ ] Make sure all checks have passed
• [ ] PR description is clear and comprehensive
• [ ] Mentioned the issue that this PR solves (if applicable)
• [ ] Make sure you test the changes