Settings: Add check to verify requirements (widevine and network status)

[flubshi]

This adds a new menu entry to addon configuration to check and install for widevine and to check for waipu network access.
This allows self diagnosis for users if waipu is not working.

New menu entry:

Check result:

[ksooo]

Wouldn't it make more sense to implement this few lines of code in C++ instead of Python? Why that complicated? Or is this script used elsewhere, from outside Kodi?

Just asking...

[flubshi]

I agree, I am also not very happy with this workaround. I would love to see a cleaner solution for setting up widevine, but I currently don't know how to implement.
The module script.module.inputstreamhelper manages widevine setup and is the recommended solution for video plugins. As far as I know. Thus, in my opinion it makes no sense to re-implement widevine setup. The cleanest solution is to utilize inputstreamhelper.
I had several ideas to implement this:

Call inputstreamhelper from pvr plugin via JSONRPC:

• Problem 1: inputstreamhelper addon is a library and it seems not possible to call library methods directly
• Problem 2: How to submit a JSONRPC call from a pvr plugin?

Invoke inputstreamhelper library from pvr plugin:

• Problem: No interface to use python kodi libraries from pvr plugin

That's why I decided to add a simple python helper script that imports inputstreamhelper and checks/installs widevine. Easiest way to integrate this was as RunScript settings menu entry.

But as mentioned, it would be great to have a cleaner solution. Do you have any hints?

[ksooo]

Sorry, I don't have a better idea. Maybe @peak3d has some thoughts on this.

[flubshi]

Since there is currently no better solution - I think this workaround is good to go.
@ksooo or are you vetoing?

[ksooo]

No veto on my end, but maybe @peak3d has an opinion?

[peak3d]

I'm fine with that - I don't see alternatives currently 👍

[flubshi]

Thanks for all your feedback! Will merge now :)