Introduce group posts

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/service/http/base_client.ex

@@ -0,0 +1,30 @@
+defmodule Mobilizon.Service.HTTP.BaseClient do
+  @moduledoc """
+  Tesla HTTP Basic Client
+  """
+
+  use Tesla
+  alias Mobilizon.Config
+
+  @default_opts [
+    recv_timeout: 20_000
+  ]
+
+  adapter(Tesla.Adapter.Hackney, @default_opts)
+
+  @user_agent Config.instance_user_agent()
+
+  plug(Tesla.Middleware.FollowRedirects)
+
+  plug(Tesla.Middleware.Timeout, timeout: 10_000)
+
+  plug(Tesla.Middleware.Headers, [{"User-Agent", @user_agent}])
+
+  def get(url) do
+    get(url)
+  end
+
+  def post(url, data) do
+    post(url, data)
+  end
+end