kodi-addon-pvr-plutotv: Bump to v21.0.1

[sveyret]

Hi, this is the first of a serie of PR.

I have a RPi4 (arm64) at home running Kodi and I wanted to update to nanbield, but the initial layer is not ready for it. So I’ve used yours which is far more active. May I suggest you to ask to become the official maintainer of meta-kodi ?

I am using the nanbield branch, because I want to have a rather stable system. First of all, my system could not compile until I had taken patch:
yoctoproject/poky@daee9d9
from Poky master branch (upgrade of ffmpeg) and the following ones from your master branch: from:
a83bfc3
to:
d7eb727
and:
947095b

Maybe could you update the nanbield branch with at least these patchs and also with the ones from my PRs.

So, this first PR is simply to update the Kodi addon pvr-plutotv.

Don’t hesitate and tell me if you need me to re-work this patch and the following ones, and also if you want me to also create a backport for the nanbield branch.

[MarkusVolk]

Hi,
thanks for your contributions. They all look reasonable to me.
I'll have to mention that my intention was never to take over this layer. @dev-0x7C6 has done a great job keeping it up to date, and due to lack of privileges requested changes from @koenkooi over a year ago with no response to this day.
koenkooi#65

So I wouldn' even know who to ask to get an answer.

I pushed the requested commits to the nanbield branch. Let me know if somthing is still missing