Add HTML request to retrieve publishDate and uploadDate - Resolves #144

[mytja]

#144

[mytja]

@Zocker1999NET May you test it? Tests are passing. Is that what you wanted?

[Zocker1999NET]

Thanks for your work, with this patch and using enableHTML=True my tests pass too.

It still makes the whole extraction process slower and it uses up more unnecessary resources (for my case) on the network and YouTube, so I am still considering to stay at a version without the fixes of #134 because this issue does not really affect me.

It may be could be considered for a future version that there are some users, which need the upload date, and some, which prefer to receive working direct stream URLs. Then for example, a call to this library could look like Video.getInfo(video_url, get_release_date=True, get_stream_urls=False) (for my case) and the library could decide on requiring only one plain HTML request to do. But this is only an idea.

Still, this is better than before, so thank you. Please merge this change, maybe I will code something like that idea later on.

[mytja]

Okay, so here it is.

Now it's like this:

• Video.getFormats() uses InnerTube API, and you cannot change that
• Video.getInfo() uses HTML, and you cannot change that
• Video.get() uses InnerTube API by default, but you can also create a HTML request to YouTube ALONGSIDE InnerTube API using get_upload_date=True

I will merge it, as tests are passing, and it seems to work just fine.

[Zocker1999NET]

@mytja that makes even more sense for a good backwards compatibility, thanks for your work