ANT Neuro SDK functions

[bdieudonne]

Added ANT SDK info as custom config_board function "get_info":

board.config_board("get_info")

would return (for example):

{
    "type": "EE411",
    "firmware_version": 12345,
    "serial_number": "424242",
    "sampling_rates": [500,512,1000,1024,2000,2048],
    "reference_ranges": [1,0.75,0.15],
    "bipolar_ranges": [1,0.75,0.15],
    "power_state": {
        "is_powered": 1,
        "is_charging": 0,
        "charging_level": -1
    }
}

[Andrey1994]

as an idea looks nice, just need to swap to json on cpp side instead stringstream