Add support to ijai.vacuum.v2
Try to test the new xiamio vacuum and getting below:

[5/11/2021, 03:30:20] [miot] [Vacuum 2] Connected to device: ijai.vacuum.v2
[5/11/2021, 03:30:20] [miot] [Vacuum 2] Initializing device properties
[5/11/2021, 03:30:20] [miot] [Vacuum 2] Initializing device actions
[5/11/2021, 03:30:20] [miot] [Vacuum 2] Device not supported! Using a generic device with limited properties! Consider requesting device support!
[5/11/2021, 03:30:20] [miot] [Vacuum 2] Initializing accessory!
[5/11/2021, 03:30:20] [miot] [Vacuum 2] Accessory successfully initialized!
[5/11/2021, 03:30:20] [miot] [Vacuum 2] Setting up device!
[5/11/2021, 03:30:20] [miot] [Vacuum 2] Did not specified. Got did: <XXXXXXXXXX> from device!
[5/11/2021, 03:30:20] [miot] [Vacuum 2] Doing device specific setup
[5/11/2021, 03:30:20] [miot] [Vacuum 2] Doing initial property fetch
[5/11/2021, 03:30:20] [miot] [Vacuum 2] Device setup finished! Device ready, you can now control your device!

Although I can get the device available at home app but it does not response anything.

config.json as below:

{
        "bridge": {
                "name": "Homebridge",
                "username": "XX:XX:XX:XX:XX:XX",
                "port": 11111,
                "pin": "222-22-222"
        },
        "platforms": [{
                "platform": "miot",
                "devices": [{
                        "name": "Vacuum 2",
                        "ip": "192.168.??.??",
                        "token": "<my token>",
                        "pollingInterval": 10,
                        "modeControl": true,
                        "mopModeControl": true
                }]
        }]
}

Any idea if this may caused by unsupporting device?