Add very basic oauth and mastodon api support.

lib/pleroma/web/mastodon_api/mastodon_api_controller.ex

@@ -0,0 +1,32 @@
+defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
+  use Pleroma.Web, :controller
+  alias Pleroma.{Repo, App}
+
+  def create_app(conn, params) do
+    with cs <- App.register_changeset(%App{}, params) |> IO.inspect,
+         {:ok, app} <- Repo.insert(cs) |> IO.inspect do
+      res = %{
+        id: app.id,
+        client_id: app.client_id,
+        client_secret: app.client_secret
+      }
+
+      json(conn, res)
+    end
+  end
+
+  def verify_credentials(%{assigns: %{user: user}} = conn, params) do
+    account = %{
+      id: user.id,
+      username: user.nickname,
+      acct: user.nickname,
+      display_name: user.name,
+      locked: false,
+      created_at: user.inserted_at,
+      note: user.bio,
+      url: ""
+    }
+
+    json(conn, account)
+  end
+end