[Feature Request]: HT1818Z3G5L GPS support

[hpsaturn]

Platform

ESP32 T-Deck firmware (beta and alpha versions)

Overview

I have some radios ready with Meshtastic, and I was testing the T-Deck hardware with this GPS module HT1818Z3G5L, but I notice that the GPS is detected but the firmware can not retrieve the info maybe. I have using this module in other development and works fine with the TinyGPS library for example.

I'm relative new around the Meshtastic development, I did some PR in the Android app of it, and I know some things around the ESP32 development. What is the way or the first steps to try to contribute with support this module? Thanks in advance.

Serial output

WARN  | ??:??:?? 762 [GPS] 3 new GPS checksum failures, for a total of 17948.
WARN  | ??:??:?? 762 [GPS] 7 new GPS checksum failures, for a total of 17955.
WARN  | ??:??:?? 762 [GPS] 1 new GPS checksum failures, for a total of 17956.

Extra context

Here a video showing the issue:
https://github.com/meshtastic/firmware/assets/423856/89fe4116-e3f4-47ae-8ec0-b3935f05c1e1

[GPSFan]

The AT6558 chipset is a Casic protocol chip and is not currently supported, but has a PR to add support. See PR #3610.