Implemented config file

[akotulu]

1. Plugin failed to run with older version of liquidctl cause of the StatusRecord.value has type float, but ctl returned a string. Improved the status parsing to log failed devices. Now plugin will be loaded regardless of parsing issues.
2. Implemented config file called FanControl.Liquidctl.json. It supports sending custom match commands to device (e.g. set color).

   {
   "liquidctl": {
   "exePath": "liquidctl.exe",
   "match": [
     {
       "device": "kraken",
       "set": [
         "ring color breathing 05445E 189AB4 75E6DA D4F1F4",
         "logo color spectrum-wave --speed slower"
       ]
     }
   ]
   }
   }