Add GET /api/v1/profile (#37912)

app/controllers/api/v1/profiles_controller.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class Api::V1::ProfilesController < Api::BaseController
+  before_action -> { doorkeeper_authorize! :profile, :read, :'read:accounts' }
+  before_action :require_user!
+
+  def show
+    @account = current_account
+    render json: @account, serializer: REST::ProfileSerializer
+  end
+end