feat(HQLGenerator): adding decorator with node name

• feat(HQLGenerator): adding decorator with node name

Resolves #90 (closed)

This MR adds a simple method to decorate the generated SQL statements with comments referencing the machine hostname.

I added an additional test file to test this with more granularity, since the only tests I could find that covered this file were way more broad, and didn't test the actual statement being generated.