FluidSynth GUI command/shell

[pedrolcl]

I've been toying lately with this ConsoleWidget component which I forked from QConsoleWidget by @gapost and ported it to Qt6 and CMake.

With this component I've made these two cross platform experiments/proofs of concept:

• netcat-qt to access FluidSynth shell service from the network.
• fluidsynth-qt-gui is a GUI command shell implementation for the Fluidsynth library. Here you can see an screenshot:

Why?

Because nerds love terminal. And FluidSynth providing this original and very convenient feature, it has been neglected in all GUI implementations of the synth. I may imagine some reasons why not:

• The Fluidsynth API for the command handler/shell is based on file descriptors, which are not very cross-platform, and unfriendly to integrate with GUI applications.
• It may be difficult to synchronize commands with the GUI controls state.

There have been attempts to do this, long time ago for qsynth by @LiamM32, but none has been successful as far as I know.

Anyway, I believe that this may have some potential. What do you think?