Also move the iPhone device machine id to a constant, explain how it is used and move the licence in the header of the file, and fix missing imports in YoutubeStreamExtractor (due to a rebase issue).
InnerTube responses return pretty printed responses, which increase responses' size for nothing.
By using the prettyPrint parameter on requests and setting its value to false, responses are not pretty printed anymore, which reduces responses size, and so data transfer and processing times.
This usage has been recently deployed by YouTube on their websites.
In order to use still use mocks with the generation of random strings in player requests, we need to use YoutubeParsingHelper.setSeedForVideoTests() method in every stream test.
The iOS client is only enabled for livestreams and the Android client is now only enabled for videos, both by default.
A way to force, or not, the fetch of both clients have been added with two new static methods in YoutubeStreamExtractor.
This is done by fetching https://www.youtube.com/sw.js for YouTube and https://music.youtube.com/sw.js for YouTube Music.
Two new methods in Utils class have been added which allow to try to get a match of regular expressions in a string array, or a Pattern array, on a content, on a specific index or 0.
Also some code refactoring has been made in this class.
The cpn param, aka the content playback nonce param, is a parameter sent by YouTube web client in videoplayback requests, and for some of them, in the player request body. This PR adds it everywhere.
For the desktop/WEB client, some params were missing from the playbackContext object, which seemed (or not) to make YouTube throttle streams extracted from the WEB client. This PR adds them.
Fingerprinting on the WEB client basing on the client version used is not possible anymore, because the latest client version is extracted at the first time of a YouTube request on a session which require the extractor to fetch again the website (and this may come back the reCaptcha issues again unfortunately, but it seems there is no other way to get it).
For the Android client, the video id is now also sent as a query parameter, like a 12 characters string, in the t query parameter, in order to spoof better this client. Researches need to be done on this parameter, unique to each request, and how it is generated by clients.
This commit also fixes a small bug with the Android User-Agent string.
Some code improvements have been also made.
The boolean keyAndVersionExtracted in YoutubeParsingHelper was not set to false when resetting the client version and the key, which makes the extractor uses null on the next getting of the client version or the key if the clientVersion and the key were extracted before.
Also update client versions.
``contentFilters`` and ``sortfilter`` are get inside the ``ListLinkHandler`` and not the ``ListLinkHandlerFactory``
``ListLinkHandlerFactory`` only passes these values through when ``fromQuery`` is called
