Allow the network reader to read a list of all variables in a variable store.

[DasBrain]

Issue type:

• :heavy_plus_sign: Feature request

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Short description:

Currently, a network reader pointed at a variable store shows the value "ERROR" when looking at the value with a network reader.

In some sense, the Variable Store does expose a lot of values to the network - it would be nice if the network reader could provide this as a list.

[rubensworks]

Thanks for the suggestion!

[shadow7412]

I use-case I have for this is that I have a bunch of booleans that say whether my fission reactor (mekanism) should be running.

Something like this would be a much cleaner solution than calling append and effectively creating n+1 lists. It would also making adding and (especially) removing variables from that list much more pleasant.