Add yt-dlp Extractor Argument Support

[Kyrluckechuck]

Add yt-dlp Extractor Argument Support

Adds yt-dlp extractor argument support

Description

Youtube has recently made it impossible to use yt-dlp without accessing via PO Tokens. yt-dlp supports that, but you need to be able to provide the extractor_args parameter to the API (or --extractor-args to the CLI).

This PR enables that in the Spotdl API since if you were to supply it currently it would fail.

** Note
This does not add the support to the CLI usage (yet), as that isn't in the scope of what I use this library for. A followup enabling this through the CLI & argument parser would be necessary to enable those. This fix is sufficient for my usage.

Related Issue

Partially fixes #2279, depending on if you're using the CLI or API

Motivation and Context

See description

How Has This Been Tested?

Locally, doing simple tests.

Screenshots (if appropriate)

Before (with cookies only):

After (with cookies & po token):

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project
• My change requires a change to the documentation
• I have updated the documentation accordingly
• I have read the CONTRIBUTING document
• I have read the CORE VALUES document
• I have added tests to cover my changes
• All new and existing tests passed