[3563246] Add Drush commands and abstract logout logic into shared service
- Create UserLogoutService to centralize logout functionality
- Add Drush commands for forcing user logouts:
- force-logout:user (flu): Logout single user by username
- force-logout:roles (flr): Logout users by role(s), with --list option
- force-logout:all (fla): Logout all non-admin users with confirmation
- Refactor existing forms to use the new service:
- IndividualUserLogoutForm
- RoleBasedLogoutForm
- AllOtherUsersLogoutForm
- Add force_users_logout.services.yml for service definitions
- Add Drush commands for forcing user logouts:
Closes #3563246