MidiConnection bugs

[SrMouraSilva]

Based in: https://gist.github.com/dcoredump/6037ad2224ed4755d1438b2a7e75d74a

• SystemMidiInput connections doesn't work because:
  

  PluginsManager/pluginsmanager/observer/mod_host/protocol_parser.py

  Lines 95 to 96 in 1bae51a

  	if isinstance(effect_input, SystemInput):
  	return '{}:{}'.format(effect, effect_input)

• SystemMidiOutput connections doesn't work because:
  

  PluginsManager/pluginsmanager/observer/mod_host/protocol_parser.py

  Lines 86 to 87 in 1bae51a

  	if isinstance(effect_output, SystemOutput):
  	return '{}:{}'.format(effect, effect_output)

• Enable plugins instance (effects) use custom name: effect.force_port_name = False
• Define SystemEffect true by default effect.force_port_name = True;
• Change ProtocolParser for use the port name instead "instance indicador" if effect.force_port_name == True;
• #81 [x] Discover system midi ports: utils.get_jack_hardware_ports
• Add in docs jack_lsp -A (see C0deman conversation in Zynthian discourse)

# Example in Zynthian
root@zynthian:~# jack_lsp -A
system:playback_1
   alsa_pcm:hw:0:in1
system:playback_2
   alsa_pcm:hw:0:in2
ttymidi:MIDI_in
ttymidi:MIDI_out
Zyncoder:output
Zyncoder:input

• Add in docs jack_alias system:midi_capture1 ttymidi:MIDI_in (see C0deman conversation in Zynthian discourse)