New filter: show only downloaded

[harakun24]

Describe your suggested feature

It is nice if we can have the option to only show downloaded manga so we can separated the list by a filter. Thank you so much. Have a nice day!

Acknowledgements

• [X] I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.

[ztimms73]

You can access it in Explore -> Local storage?

[harakun24]

You can access it in Explore -> Local storage?

No it is not the same, no category when use local storage