Modulation Matrix for AddSynth

[friedolino78]

first steps for generic (control rate) modulation sources
possible use cases ENV->LFO freq->fCutoff

gui: mruby-zest/mruby-zest-build#111

[friedolino78]

I reworked the concept in many ways to make it usable without OSC / Automation but with a mod matrix gui.

it compiles now but unfortunatelly generating the json doesn't work.

zynaddsubfx --dump-json-schema=/home/mk/synth/mruby-zest-build/src/osc-bridge/schema/test.json

ZynAddSubFX - Copyright (c) 2002-2013 Nasca Octavian Paul and others
                Copyright (c) 2009-2019 Mark McCurry [active maintainer]
This program is free software (GNU GPL v2 or later) and 
it comes with ABSOLUTELY NO WARRANTY.

Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
rtosc port dumper: Cannot handle '/part[0,15]/kit[0,15]/padpars/oscilgen/basefuncFFTfreqs'
    args = <::b>
rtosc port dumper: Cannot handle '/part[0,15]/kit[0,15]/adpars/VoicePar[0,7]/OscilSmp/basefuncFFTfreqs'
    args = <::b>
rtosc port dumper: Cannot handle '/part[0,15]/kit[0,15]/adpars/VoicePar[0,7]/FMSmp/basefuncFFTfreqs'
    args = <::b>
zynaddsubfx: /home/mk/synth/zynaddsubfx/rtosc/src/cpp/ports.cpp:1103: void walk_ports_recurse0(const rtosc::Port&, char*, size_t, const rtosc::Ports*, void*, rtosc::port_walker_t, void*, char*, char*, bool, const char*, bool): Assertion `isdigit(*read_head)' failed.
Abgebrochen (Speicherabzug geschrieben)

[fundamental]

I cannot checkout a copy of this PR due to an invalid git submodule hash for rtosc.

[friedolino78]

please try again ;-)