Turn off FCC locking, GNSS and GPS on all models

[lakdif]

I'm not sure which submenu it should go to, but we can have a few extra privacy and power saving related commands
at boot.

AT+QCFG="fcc_enable",0 // https://junyelee.blogspot.com/2021/03/linux-mobile-interface-broadband-model.html
AT+QGPS=0 // According to Quectel, 1 starts as GNSS and XTRA enabled. We should set it to 0.
AT+QGPSXTRA=0 // Prevent connections and almanac downloads from http://xtrapath1.izatcloud.net/xtra.bin
AT+QGPSEND // According to docs, hangs up on GPS acquisition completely

[dr-dolomite]

Ill add it for next PR. Thanks!

[iamromulan]

Some of these commands don't seem to work for me. Are they exclusive to the certified firmwares?

[lakdif]

They are from the PDF manual for certified R03 firmware