Model categories - display all models

[Eldenroot]

Is there an existing issue for this feature request?

• [X] I have searched the existing issues

Is your feature request related to a problem?

To find some models :)

Describe the solution you'd like

Add a new tab in the model category screen to display all models at once :)

Describe alternatives you've considered

No response

Additional context

No response

[pfeerick]

https://github.com/EdgeTX/edgetx/pull/1374 should do this once it's ready to go.