Provides a struct to hold average load data.
## Examples
iex> a = %ExFacts.System.Load.AvgStat{load1: 1.5, load5: 0.98, load15: 2.42} ...> a.load15 2.42
t() :: %ExFacts.System.Load.AvgStat{load1: float, load15: float, load5: float}