This PR places all LMMS symbols into namespaces to eliminate any potential future name collisions between LMMS and third-party modules.
Also, this PR changes back `LmmsCore` to `Engine`, reverting c519921306 .
Co-authored-by: allejok96 <allejok96@gmail.com>
This also adds more min/max checks, mostly for logarithmic scales.
Since this raised some warnings for logarithmic CV ports, the CV
metadata is now also read (but CV ports are still not supported).