ADD extra GPS statistics widget for OSD

[tipoman9]

Provide a lightweight periodic non-ACK UBX poll for MON RF (UBX class 0x0A id 0x38), only when requested by OSD, that does not interfere with configuration ACK handling.
Surface useful RF diagnostics (noisePerMS) and condensed per-constellation satellite statistics directly on OSD for quick in field diagnostics.
The satellite grouping counts and "good" definition follow UBX NAV signal semantics (good when quality == UBLOX_SIG_QUALITY_CODE_LOCK_TIME_SYNC).

Some consumer-grade GPS units support only 3 out of 4 constellations, so the satellite statistics help identify which constellation provides better coverage at a given location.
Additionally, the noise level metric can help detect potential interference between the VTx or telemetry Rx antenna and the GPS antenna, allowing the pilot to take corrective actions such as adjusting transmission power or increasing antenna separation.

The is how the widget represents the extra statistics:

10 GPS satellites visible, >4 locked.
5 Glonass sats visible, 3 locked

8 GPS sats visible, 2 locked.
5 Glonass sats visible, 3 locked

A small change in the configurator is needed, the corresponding PR is created.

[github-actions]

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