twitter api: add friend requests list api

lib/pleroma/web/router.ex

@@ -247,6 +247,8 @@ def user_fetcher(username) do
     post("/statuses/retweet/:id", TwitterAPI.Controller, :retweet)
     post("/statuses/destroy/:id", TwitterAPI.Controller, :delete_post)
 
+    get("/pleroma/friend_requests", TwitterAPI.Controller, :friend_requests)
+
     post("/friendships/create", TwitterAPI.Controller, :follow)
     post("/friendships/destroy", TwitterAPI.Controller, :unfollow)
     post("/blocks/create", TwitterAPI.Controller, :block)

lib/pleroma/web/twitter_api/twitter_api_controller.ex

@@ -331,6 +331,15 @@ def friends(conn, params) do
     end
   end
 
+  def friend_requests(conn, params) do
+    with {:ok, user} <- TwitterAPI.get_user(conn.assigns.user, params),
+         {:ok, friend_requests} <- User.get_follow_requests(user) do
+      render(conn, UserView, "index.json", %{users: friend_requests, for: user})
+    else
+      _e -> bad_request_reply(conn, "Can't get friend requests")
+    end
+  end
+
   def friends_ids(%{assigns: %{user: user}} = conn, _params) do
     with {:ok, friends} <- User.get_friends(user) do
       ids =