Integer Channel numeration in LinSpaceBuilder makes awg assignment difficult

[Nomos11]

Translating the ChannelIDs to integers in the LinSpaceBuilder makes it difficult to spread the program to multiple AWGs. In the current master branch, using multiple AWGs for a LinSpace program is not possible.

[Nomos11]

I feel like this could be solved by either adding metadata to the program, or have the channels be ChannelIDs still.

This can also get rid of having to supply the channels into the linspacebuilder when building the program