Hide Youtube-Shorts per Vulpelo

Hides shorts on YouTube™ from homepage, subscriptions, search results.
It can also hide "Shorts" tab.

Additional options:
- hide videos only on specific pages (home/subscription/channel/search page)
- hide Shorts tab
- setting a timeout to not allow checking for shorts more often than a specified time (to reduce calling hiding shorts function to reduce page load)
- A button to close a section with shorts located on the subscriptions page
- hiding shorts in notifications menu
- hiding live videos (experimental)
- hiding 'upcoming' videos (experimental)

Source code can be found here: https://github.com/Vulpelo/hide-youtube-shorts

YouTube™ and YouTube Shorts™ are trademark of Google Inc.