Regularize naming of quantum_port_receiver for HoM and ABSA

[rdviii]

QNodes have either a quantum_port or a quantum_receiver_port, which makes sense (though maybe quantum_port should be quantum_transmitter_port?), but the HoM has a quantum_port, even though it only ever receives photons, never transmits.

Same for the new ABSA we're building.

These should be regularized; probably the HoM should be modified to have a quantum_receiver_port.

This will involve modifying existing .ned files, unfortunately.