Allow PlayLists with missing uploader

[Redirion]

This supports PR 2724 in NewPipe

For bug description and proposed solution with this pr, see this comment.

• I carefully read the contribution guidelines and agree to them.
• I did test the API against NewPipe.
• I agree to ASAP create a PULL request for NewPipe for making in compatible when I changed the api.

[PeterHindes]

Nice I'll test a build with these changes later today.

[TobiGr]

Looks good, but please fix the build. List and ArrayList are not imported. This must be changed before a merge. Otherwise the build will not succeed.

[PeterHindes]

what is the proper way to run a test build with this version of the extractor. Im unfamiliar with gradle.

[Stypox]

@PeterHindes open up the project in Android Studio and create a new run configuration for Junit 4 tests

[PeterHindes]

I meant building it with the app. I was tryna add it here

[Stypox]

@PeterHindes follow these steps:

1. Go to the root build.gradle file (in the project root folder) and add maven { url "https://jitpack.io" } under allprojects { repositories { ... HERE } }
2. Go to the app build.gradle file (in the app/ subfolder) and add implementation 'com.github.USERNAME:REPO_NAME:FULL_COMMIT_SIGNATURE'. For the latest commit of @Redirion repository it would be implementation 'com.github.Redirion:NewPipeExtractor:cdf41b868c5ea877fd6e1e90688f0d4e95c84a34'.

[PeterHindes]

cool thanks for walking me through it.