[FEATURE REQUEST] FreeBSD Support

[Aimsucks]

Hey, would love to use this on my TrueNAS Core server. I got the agent working by loading the Linux compatibility layer with kldload linux64 and then running the agent, but it's not reporting uptime, CPU, or RAM.. only disk usage.

Here's a JSON response from the API on the TrueNAS server:

{
   "host_info_is_available":false,
   "boot_time":-62135596800,
   "hostname":"",
   "platform":"",
   "cpu":{
      "load_is_available":false,
      "load1_percent":0,
      "load15_percent":0,
      "temperature_is_available":false,
      "temperature_c":0
   },
   "memory":{
      "memory_is_available":true,
      "total_mb":0,
      "used_mb":0,
      "used_percent":0,
      "swap_is_available":true,
      "swap_total_mb":17592186042368,
      "swap_used_mb":0,
      "swap_used_percent":0
   },
   "mountpoints":[
      {
         "path":"/mnt/tank1/media",
         "name":"Media",
         "total_mb":1234,
         "used_mb":123,
         "used_percent":10
      },
      {
         "path":"/",
         "name":"Root",
         "total_mb":1234,
         "used_mb":123,
         "used_percent":10
      }
   ]
}