Allow for specifying CA certificates (required for some HTTPS proxies #303)

[danielsanmartin]

To fetch HTTPS pages, you will need to download and install the a certificate in your HTTP client. In this case, we need to pass to requests the verify paramenter which sets the path to certificate.

[0xRaduan]

very useful, @danielsanmartin - do you have some sort of a walkthrough, on how exactly I need to install those ca certificates and specify them here?

[jdepoix]

Hi @danielsanmartin 👋
Thank you very much for your contribution! 😊

Just to make sure I am not missing something: this just allows you to specify/override the CA certificate used, which is required by Zyte to use their https proxies. This might potentially also be the case for other proxy services, but it is fairly provider specific. Correct?

I am happy to merge this (with some slight adjustments mentioned in the comments), I just want to make very clear that this does not solve #303 and it does not avoid IP bans, it only allows you to use Zyte as a workaround to being IP banned, but even your proxies IP can still be banned in the future by YouTube. (I just want to highlight this, as the title of this PR might raise some false expectations and a lot of people are currently following #303. I have updated the title of this PR to avoid false expectations.)

[jdepoix]

Also, it would be great if you could mention this param in the README. I think you can just add it to the Proxy section.

[danielsanmartin]

Perfect. I agree with all the proposed developments.

[danielsanmartin]

Hi. I already did the requested changes.