Add very basic oauth and mastodon api support.

priv/repo/migrations/20170906120646_add_mastodon_apps.exs

@@ -0,0 +1,16 @@
+defmodule Pleroma.Repo.Migrations.AddMastodonApps do
+  use Ecto.Migration
+
+  def change do
+    create table(:apps) do
+      add :client_name, :string
+      add :redirect_uris, :string
+      add :scopes, :string
+      add :website, :string
+      add :client_id, :string
+      add :client_secret, :string
+
+      timestamps()
+    end
+  end
+end

priv/repo/migrations/20170906143140_create_o_auth_authorizations.exs

@@ -0,0 +1,15 @@
+defmodule Pleroma.Repo.Migrations.CreateOAuthAuthorizations do
+  use Ecto.Migration
+
+  def change do
+    create table(:oauth_authorizations) do
+      add :app_id, references(:apps)
+      add :user_id, references(:users)
+      add :token, :string
+      add :valid_until, :naive_datetime
+      add :used, :boolean, default: false
+
+      timestamps()
+    end
+  end
+end

priv/repo/migrations/20170906152508_create_o_auth_token.exs

@@ -0,0 +1,15 @@
+defmodule Pleroma.Repo.Migrations.CreateOAuthToken do
+  use Ecto.Migration
+
+  def change do
+    create table(:oauth_tokens) do
+      add :app_id, references(:apps)
+      add :user_id, references(:users)
+      add :token, :string
+      add :refresh_token, :string
+      add :valid_until, :naive_datetime
+
+      timestamps()
+    end
+  end
+end