removes the information about NewPipe Legacy which is soon going to be removed from the NewPipe website. (DEPLOY WITH THE WEBSITE UPDATE TeamNewPipe/website#299)
uses NewPipe's F-Droid repo for APK downloads instead of GitHub's download server, replaces GitHub releases with NewPipe's F-Droid repository completely, because GitHub does not provide hash sums directly (we could upload them to GH releases as sparate file anyway)
This PR
requires https://gitlab.com/fdroid/fdroid-website/-/merge_requests/841 to be mergedToDo: