Add support for session key file or cookie file to login #40
Description
Is your feature request related to a problem?
Sometimes it is better to use a file to log into Instaloader than a username and password as evidenced by https://github.com/RyanLua/InstaWebhooks/discussions/15.
Describe the solution you'd like
Two new arguments to login with session key file or cookie file.
Describe alternatives you've considered
No response
Additional context
No response
Code of Conduct
- I agree to follow this project's Code of Conduct