Topic /{hub}/info

Topic '/{hub}/info' sends by device as a next step (and final) steps of registration and contains current state of hub and connected to the hub devices

Example:

[1690137030] /48:3f:da:55:07:5b/info -> 
{
    "mac": "48:3f:da:55:07:5b",
    "version": "R230620;master;4588a7b7fbc59165f44ff9980aaf9df8077c9629",
    "type": "mpy",
    "prot": 2,
    "devices": [
        {"s": 3996365522, "t": 1, "r": {"0": 3996365522, "1": 1690137029}}
    ]
}

Where
* MAC - gives a hub identification (token)
* Version - Show current version of hub. Version contains a 3 part with ';' delimeter
* First shows build which equals date and have format RYYMMDD
* Second shows a used GIT-branch (here 'master' branch)
* Latest is GIT commit
* Type - Simply type of hub (string and could be any)
* Prot - Protocol version. If missed then equals 1
* Devices - Devices state, in protocol version 1 it was a list with device serials which is connected to the hub
* 's' - serial number of connected device
* 't' - Type of the device
* 'r' - Current registers values. Register 0 always contains a serial number, and register 1 - registration time (in unixtime format)