Creates an instance of the movement and occupation sensor.

Usage:

defmodule MyApp.MySensor do
  use HcSr501Occupation.MovementSensor

  @impl HcSr501Occupation.MovementSensor
  def pin, do: 17

  @impl HcSr501Occupation.MovementSensor
  def occupation_timeout, do: :timer.seconds(180)
end

Add to the supervision tree, eg

defmodule MyApp.Application do
  use Application

  def start(_type, _args) do
    children = [
      MyApp.MySensor
    ]
    opts = [strategy: :one_for_one, name: MyApp.Supervisor]
    Supervisor.start_link(children, opts)
  end
end

See README for full usage.