Bug 32178: Remove security breach introduced in bug 31378

Bug 32178: Remove security breach introduced in bug 31378

This patch removes a security breach in C4::Auth::check_api_auth introduced by bug 31378, where when someone called an api with the parameters userid and auth_client_login, check_api_auth would automatically asume the user calling was that userid.

This patch also introduces C4::Auth::create_basic_session(), a function that creates a session and adds the minimum basic parameters.

Signed-off-by: David Cook <dcook@prosentient.com.au>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>