ADD basic playlist support + youtube playlist support

[BlenderViking]

Hi,

I begin the refactor of my previous pull request : TeamNewPipe/NewPipe#377

To avoid the same problem as previously encountered (to big code base change), I begin to submit multiple small pull request.

To avoid the same problem as previously encountered, I will send the code by multiple small pull request.

So here the code for import an external playlist in the core extractor app.

I made a unit test but I didn't found how to commit it in the core part.
So i made a gist for store it : https://gist.github.com/BlenderViking/c73c6776580ed661f78f6b0739a66e73

[theScrabi]

The unit tests are still part of the NewPipe app itself.

Nice work. :)

[theScrabi]

All right looks fine to me so far :) Just one small thing:

[theScrabi]

Please fix the spacing.

[BlenderViking]

Ok, It's fixed :)
I just a question, how to correctly map the git submodules on Android Studio in the main project ?

[theScrabi]

Ow good question, I did it using the command line.

[theScrabi]

I've updated the extractor repository.
I think with git submodules update you can update it now on your side.
However if you want to update it (by means you want to create the commit where it gets updated) you have to go to the submodules repo, and do a git pull origin master.

[BlenderViking]

I found, after clone the repos, we just need to tape in command line :
The init the submodule :

git submodule init
git submodule update --recursive --remote

And then in AndroidStudio define in the git config the submodule :

And we can see the repos of the submodule in Android Studio :

[theScrabi]

ah alright