Multi youtube channel support

[cyklon73]

Checklist

• [X] Read Contribution Guidelines and Style Guides
• [ ] Test the Code
• [X] This PR is ready to review and merge

Description

Allow multiple Youtube channels for alearts

Related Issue

Is this PR related to an issue

Other Information

N/A

[MatitoDev]

if you are currently editing the YouTube feature anyway, can you add a handler for rate limits so we aren't mentioned every time viedeos is null? https://discord.com/channels/1077255218728796192/1190041771267342508/1263178590757847174