Add action to replicate a presentation

[alkrauss48]

Details over how to replicate in filament: https://filamentphp.com/docs/3.x/actions/prebuilt-actions/replicate.

Implement this on app/Filament/Resources/PresentationResource.php in the actions function call (around L156). Convert all the existing actions into a Filament Action Group too.

When replicating, be sure to customize the data before saving and change the following properties on the new record:

• title to "Copy of "
• slug to "copy-of-"
• is_published to false.

Testing

• Add one test in tests/Filament/PresentationResourceTest.php in the non-admin users describe block for:
  • Creating a presentation as a factory, and asserting that there is only one presentation
  • invoking the ReplicateAction on that presentation (see the "can soft delete record" action as an example over how to do this)
  • asserting that there are now 2 presentations