feat: Let me categorize my YouTube Subscriptions

[Temp-Account07]

Application

YouTube

Feature description

-be able to organize your Subscriptions (and later maybe playlists too)

Categories with subcategories

Motivation

-can look for specific topics without being disctracted -would save so much time

Acknowledgements

• [X] This issue is not a duplicate of an existing feature request.
• [X] I have chosen an appropriate title.
• [X] All requested information has been provided properly.
• [X] I have written the title and contents in English.