Hidden Playlists are inaccessible in Yattee due to limitation of current UI

[upstroke-version]

Guidelines

• I have searched the issue tracker and I haven't found feature request like this

Type

Usability improvement

Describe the feature

Currently, user can add channels and playlists to Home screen of Yattee by pressing "Favorites" button on channel/playlist view. However this poses major usability problem, some playlists are NOT SEARCHABLE and only accesible by a link to a playlist. For example, this hidden playlist is accessible by a url on youtube/invidious/piped but it won't show up in a search result, thus it is impossible to add this playlist to yattee home screen. It would be great if there is an option that asks user to view the playlist page in yattee when pasting playlist url, which will enable users to add hidden playlists to Yattee home screen.