Link to Content moderation's workflows permissions listing since it does not

Problem/Motivation

Drupal's new-ish ability to show permissions relevant to one module at a time (thanks Benji Fisher!) is quite useful at helping people actually find a relevant permission.

/admin/people/permissions/module/content_moderation is a super useful page for pairing with views that are likely behind the tabs that we are showing.

Of course this should be in Workflows core but i am not up for the debate of "it is on the admin/modules page already" or the help pages nobody visits or how we should or should not add a tab (ooh, or action link) to /admin/config/workflow/workflows

Lets simply add this to our module and be helpful for now, and maybe provide an example for core to consider.

Proposed resolution

Figure out what UX this link should take, and where it should be placed. We do need our own settings page anyway if we add the ability to hide the Moderated content tab.

This is what it looks like on the Extend (admin/modules) page:

Remaining tasks

User interface changes

API changes

Data model changes