[xfileshare] Add uqload.co support

[Theo2M]

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• You will be asked some questions, please read them carefully and answer honestly
• Put an x into all the boxes [ ] relevant to your pull request (like that [x])
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Before submitting a pull request make sure you have:

• Searched the bugtracker for similar pull requests
• Read adding new extractor tutorial
• Read youtube-dl coding conventions and adjusted the code to meet them
• Covered the code with tests (note that PRs without tests will be REJECTED)
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In order to be accepted and merged into youtube-dl each piece of code must be in public domain or released under Unlicense. Check one of the following options:

• I am the original author of this code and I am willing to release it under Unlicense
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What is the purpose of your pull request?

• Bug fix
• Improvement
• New extractor
• New feature

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Description of your pull request and other information

uqload.com now redirects to uqload.co

[dirkf]

Thanks.

[x] Covered the code with tests (note that PRs without tests will be REJECTED)

Not so much, really. At a minimum there should be an only_matching test; ideally an actual test video that can be downloaded (its first 10kB, anyway) and whose metadata does not indicate "pirated" material.

If there are tests I can enable the CI test ...

[Theo2M]

OK, Thanks a lot for the clearly explication. I add the "only_matching" test.

[dirkf]

Superseded by #32725.