This was a rather easy change, since only parameter names make use of
strings in the first place.
This also improves OOM resistance: If we can't create a parameter name,
we will just set it to the empty string.
This has mainly performance benefits, so that we only need to call into
all processors once for every audio buffer segment. It requires
adjusting quite some logic in most processors and in Track, as we have
to consider a larger collection of notes and samples at each step.
There's some cautionary TODOs in the currently unused LibDSP tracks
because they don't do things properly yet.
This doesn't affect the parameter's own behavior but is part of the
parameter meta-data, just as the name. If a parameter is logarithmic,
UI elements should represent it with an interface that scales
logarithmically.
SonarCloud flagged this as m_delay_buffer is technically uninitialized
at the point at which the POD types are initialized in a constructor.
I don't check to see if this was actually a real issue, as the member
is ultimately unused. So lets just get rid of it.
