tab_known_transporters_containers: missing FKs/Constraints

[Yuri05]

Missing in the table definition:

• Foreign Key {container_type, container_name} => tab_container_names
• transport_type: constraint with allowed types (Influx, Efflux, ...)
  • Actually it would be better to define a new table "tab_active_transport_types" with just 1 column "transport_type"
    (with foreign key tab_active_transport_types.transport_type => tab_process_types.process_type)
    And then define foreign key tab_known_transporters_containers.transport_type => tab_active_transport_types
• membrane: constraint (Apical, Basolateral)

Originally posted by @Yuri05 in #2327 (comment)