Add route names for easier adding Tours.

Hi,

db_query is deprecated in the latest version, Please correct the Drupal coding standard error.

Another approach for this issue would be to provide a "Create tour" button:
- only show when the user has the permission to create tours;
- only show when there's no tour (in that case we could add an "Edit tour" button;
- link to the add tour page with the route (e.g. /admin/config/user-interface/tour/add?route=entity.media.add_form)

@mpp not sure your answer belongs to this issue right?

@clemens.tolboom, we could open a new issue if you like but the real issue here is that it's hard (e.g. for an editor) to know what route belongs to a given path. The current approach is to simplify this by adding a "find route" widget. Another (or additional) way would to add a 'create tour' button that creates a tour for the current page. This way an editor would no longer need to fill in a route (or path, or install devel as I read in the documentation) in order to create a tour.

1. +++ b/src/Controller/TourUIController.php
   @@ -67,4 +67,36 @@ class TourUIController extends ControllerBase {
   +      $list=[];
   

   + $list = [];

2. +++ b/src/Controller/TourUIController.php
   @@ -67,4 +67,36 @@ class TourUIController extends ControllerBase {
   +
   

   remove newline

It's definitely an improvement, thanks!