[Feature Request] Enhanced support for UBX-CFG-GNSS (to allow Galileo configuration on M8)

Hi!

I'm using Neo M8N GPS module with the code below, but unfortunately I can only see 25-26 satellites max.
Am I doing something wrong?
I want to use GPS+GLONASS+GALILEO at the same time.

at startup in setup block I check what baud number it is operating on (factory 9600 or already modified) and then I turn on the necessary satellite monitoring and change it so that no NMEA message comes but UBX

#include <SparkFun_u-blox_GNSS_Arduino_Library.h>
SFE_UBLOX_GNSS myGNSS;
#define mySerial Serial1


void setup() {
do {
    mySerial.begin(38400);
    if (myGNSS.begin(mySerial) == true) break;
    delay(100);
    mySerial.begin(9600);
    if (myGNSS.begin(mySerial) == true) {
      myGNSS.setSerialRate(38400);
      delay(100);
    } else {
      delay(100);
    }
  } while (1);

  myGNSS.enableGNSS(true, SFE_UBLOX_GNSS_ID_GPS);
  myGNSS.enableGNSS(true, SFE_UBLOX_GNSS_ID_GALILEO);
  myGNSS.enableGNSS(true, SFE_UBLOX_GNSS_ID_GLONASS);
  myGNSS.enableGNSS(false, SFE_UBLOX_GNSS_ID_BEIDOU);

  myGNSS.setUART1Output(COM_TYPE_UBX);
  myGNSS.setI2COutput(COM_TYPE_UBX);

  myGNSS.setMeasurementRate(200);
  myGNSS.setNavigationRate(1);
  myGNSS.setAutoPVTrate(1);
  myGNSS.saveConfiguration();

Start by tracing the enableGNSS calls shown in the issue and the library's handling of UBX-CFG-GNSS for M8 modules. Check the u-blox configuration requirements for enabling GPS, GLONASS, and Galileo together. Done means the library can configure Galileo on an M8 without disrupting the requested constellation settings, with verification added where the existing project structure supports it.