Implement Up Next integration

[michaelarnauts]

This PR implements Up Next integration.

Fixes #49

[michaelarnauts]

@dagwieers could you check if this works fine for you?

[codecov]

Codecov Report

Merging #138 into master will increase coverage by 0.75%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #138      +/-   ##
==========================================
+ Coverage   79.53%   80.29%   +0.75%     
==========================================
  Files          23       23              
  Lines        2253     2365     +112     
==========================================
+ Hits         1792     1899     +107     
- Misses        461      466       +5     

Impacted Files	Coverage Δ
resources/lib/modules/player.py	88.40% <0.00%> (-1.18%)	⬇️
resources/lib/vtmgo/vtmgostream.py	81.31% <0.00%> (-1.34%)	⬇️
resources/lib/vtmgo/vtmgoepg.py	93.57% <0.00%> (+0.05%)	⬆️
test/xbmcaddon.py	96.00% <0.00%> (+0.34%)	⬆️
resources/lib/kodiwrapper.py	74.40% <0.00%> (+1.48%)	⬆️
resources/lib/vtmgo/vtmgo.py	78.24% <0.00%> (+0.53%)	⬆️
resources/lib/plugin.py	91.45% <0.00%> (+1.97%)	⬆️
test/xbmc.py	67.76% <0.00%> (+4.13%)	⬆️
test/xbmcgui.py	70.22% <0.00%> (+4.74%)	⬆️

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[dagwieers]

The reason to skip one number is that in the future the settings will allow to add a help-text.
So we have these numbers already preserved for the future.

[michaelarnauts]

I don't remember seeing this in Kodi 19. When is this expected?

I didn't want to rename all other items, so I just used the other numbers.

[dagwieers]

It already works in Kodi 18, you can use the new settings format. But there were still minor issues and the Kodi devs did not recommend using it.

Check: xbmc/addon-check#127

[dagwieers]

Looking good.

I noticed you used the Example source code, which I have simplified from the kodiutils we use.
E.g. our jsonrpc call supports batch processing, while the one on the Wiki has this omitted.

[dagwieers]

Works well. It is nice to see this implemented using the example source code :-)