[Openload] Add support to new domain

[lr94]

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• Bug fix
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Description of your pull request and other information

I added support to new domains openload.pw and oload.pw

[dstftw]

Add only matching tests.

[leober-ramos33]

Add this to the array '_TESTS':

{
    'url': 'https://oload.pw/f/WyKgK8s94N0',
    'only_matching': True,
}