[extractor/teamcoco] Fix extractor

[bashonly]

The Teamcoco extractor needed a complete overhaul:

• some content from teamcoco.com has been moved to the new site conanclassic.com (added new extractor ConanClassic)
• teamcoco.com no longer uses GraphQL or any API calls
• conanclassic.com uses a "legacy" version of the graphQL that is slightly different

Closes #6339

Template

Before submitting a pull request make sure you have:

• At least skimmed through contributing guidelines including yt-dlp coding conventions
• Searched the bugtracker for similar pull requests
• Checked the code with flake8 and ran relevant tests

In order to be accepted and merged into yt-dlp each piece of code must be in public domain or released under Unlicense. Check all of the following options that apply:

• I am the original author of this code and I am willing to release it under Unlicense
• I am not the original author of this code but it is in public domain or released under Unlicense (provide reliable evidence)

What is the purpose of your pull request?

• Fix or improvement to an extractor (Make sure to add/update tests)
• New extractor (Piracy websites will not be accepted)
• Core bug fix/improvement
• New feature (It is strongly recommended to open an issue first)