Build the Quectel qmi_wwan_q driver (QMI + QMAP USB aggregation), the
quectel-CM connection manager, and a LuCI interface protocol as installable
OpenWrt packages — so a 5G/LTE Quectel modem runs in high-throughput QMI mode and
is configurable from Network → Interfaces like any other WAN.
Tested on a Zyxel NR7101 (modem: Quectel RG502Q-EA) on OpenWrt 25.12.x
(ramips/mt7621, kernel 6.12).