Support File upload in Elixir 1.16 and earlier

`File.stream!/3` changed in Elixir 1.16 which breaks File uploads.
This changes to use `File.stream!/2` which shoule be backwards
compatible between versions as we don't need all the options available
in `File.stream!/3`

lib/nerves_hub_link.ex

@@ -53,6 +53,6 @@ defmodule NervesHubLink do
   @doc """
   Send a file to the connected console
   """
-  @spec send_file(Path.t()) :: :ok
+  @spec send_file(Path.t()) :: :ok | {:error, :too_large | File.posix()}
   defdelegate send_file(file_path), to: Socket
 end

lib/nerves_hub_link/socket.ex

@@ -49,6 +49,7 @@ defmodule NervesHubLink.Socket do
     GenServer.call(__MODULE__, {:check_connection, type})
   end
 
+  @spec send_file(Path.t()) :: :ok | {:error, :too_large | File.posix()}
   def send_file(file_path) do
     GenServer.call(__MODULE__, {:send_file, file_path})
   end

lib/nerves_hub_link/upload_file.ex

@@ -18,6 +18,7 @@ defmodule NervesHubLink.UploadFile do
     defstruct [:file_path, :socket_pid]
   end
 
+  @spec start_link(Path.t(), pid()) :: GenServer.on_start()
   def start_link(file_path, socket_pid) do
     GenServer.start_link(__MODULE__, file_path: file_path, socket_pid: socket_pid)
   end
@@ -38,7 +39,7 @@ defmodule NervesHubLink.UploadFile do
 
     :ok = Socket.start_uploading(state.socket_pid, filename)
 
-    File.stream!(state.file_path, [], 1024)
+    File.stream!(state.file_path, 1024)
     |> Stream.with_index()
     |> Stream.each(fn {chunk, index} ->
       :ok = Socket.upload_data(state.socket_pid, filename, index, chunk)