[extractor/clyp] Added wav download support

[qulaz]

IMPORTANT: PRs without the template will be CLOSED

Description of your pull request and other information

This PR added support to download wav's from clyp.it

Clyp API not returned links to wav's (only mp3 and ogg), but in html page exists link to wav file. I'm added this to extractor.

Template

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[pukkandan]

Pls avoid force-pushing in middle of review