[Enhancement] Add support for the LNA mode configuration on the NEO-F10N

[PaulZC]

From the NEO-F10N Integration Manual:

Internal LNA mode configuration

u-blox 10 receivers support three modes for the internal low-noise amplifier (LNA): normal gain, low gain, and bypass mode. The NEO F10N default is the normal mode. With a high-gain external active antenna, the low gain or the bypass mode shall be used to save power.

Notes:

Configuration Interface key is 0x20A30057 and is documented in the Interface Description:

[PaulZC]

In release_candidate