Autologin into linkedin using cookie

[njelich]

Is your feature request related to a problem? Please describe.
Sometimes one is managing multiple linkedin accounts, and needs to swap between them quickly, logging in manually every time is a pain, even if you use a password manager.

Describe the solution you'd like
Add a utility that allows for picking up the li_at cookie (which is used for sessions and logins) while a user is logged in, as well as a selector to choose which account to log into (to make switching accounts as simply as using the selector)

Additional context
Might be useful to have the selector use the account username.