Add new RPC for reinit fw

lib/farmbot/celery_script/ast/node/reboot.ex

@@ -1,9 +1,17 @@
 defmodule Farmbot.CeleryScript.AST.Node.Reboot do
   @moduledoc false
   use Farmbot.CeleryScript.AST.Node
-  allow_args []
+  allow_args [:package]
   use Farmbot.Logger
 
+  def execute(%{package: :arduino_firmware}, _, env) do
+    env = mutate_env(env)
+    Logger.warn 1, "Reinitializing Arduino Firmware."
+    Farmbot.BotState.set_sync_status(:maintenance)
+    Farmbot.Firmware.Supervisor.reinitialize()
+    {:ok, env}
+  end
+
   def execute(_, _, env) do
     env = mutate_env(env)
     Logger.warn 1, "Going down for a reboot!"