Feature: support remote/send messages

[dromer]

Some code for detecting these is here already: https://github.com/Wasted-Audio/hvcc/blob/develop/hvcc/interpreters/pd2hv/PdMessageObject.py#L66-L78

Would be nice to enhance pd2hv to convert these into send objects.

[dromer]

Two issues with this:

• Currently empty lines are removed. So the typical [; bla 1; die 2;( messages that start with a colon won't work. There needs to be something on the first line.
• Creating objects is relatively trivial, but making the connections is tricky as PdParser uses object indices to connect them.

The first can be documented as a known limitation, but the second .. not sure how to deal with this yet.

[dromer]

Second issue has been solved! Seems to work alright although would like some better test-cases.