Correct firmware for fans

[cdnninja]

My 131 wasn't showing firmware, neither is my Classic300.

I noticed the 131 contains the firmware within the device call vs the summary call:

2025-01-18 18:20:58,548 - DEBUG - API response:

  {
  "code": 0,
  "msg": "request success",
  "traceId": "1737249658",
  "screenStatus": "off",
  "filterLife": {
    "change": false,
    "useHour": 1035,
    "percent": 75
  },
  "activeTime": 0,
  "timer": null,
  "scheduleCount": 0,
  "schedule": null,
  "levelNew": 7,
  "airQuality": "excellent",
  "level": 2,
  "mode": "manual",
  "deviceName": "Levoit 131S Air Purifier",
  "currentFirmVersion": "2.0.58",
  "childLock": "off",
  "deviceStatus": "on",
  "deviceImg": "https://image.vesync.com/defaultImages/deviceDefaultImages/airpurifier131_240.png",
  "connectionStatus": "online"
}

I couldn't find the data for the classic300 even though it is in the app.

This PR parses the data - only overwriting if it finds data.

[webdjoe]

There is a new API call that get's the firmware updates available for all devices the I found it the last time I captured packets. I can create a new branch if you think it would be useful

[cdnninja]

Wouldn't be a bad thing. It isn't hugely helpful but figured I may as well solve this one. If a better way exists I will close this one.

[webdjoe]

I started a branch here with the endpoint, problem is one device may have multiple firmware updates for the mainfw and mcu. I messed around with using a dataclass to hold the state but it's a bit clunky. Let me know if you have any thoughts:
firmware-updates