treewide: add `mainProgram`

    # error: 'vvtanh' was not declared in this scope; did you mean 'tanh'?

    # error: no matching function for call to 'juce::dsp::SIMDRegister<double>::SIMDRegister(xsimd::simd_batch_traits<xsimd::batch<double, 2> >::batch_bool_type)'

    broken = stdenv.isAarch64; # since 2021-12-27 on hydra (update to 2.10): https://hydra.nixos.org/build/162558991

    mainProgram = "CHOWTapeModel";

  };

}

    license = with licenses; [ bsd3 ];

    maintainers = with maintainers; [ magnetophon ];

    platforms = platforms.linux;

    mainProgram = "ChowKick";

  };

}

    license = licenses.gpl2Plus;

    platforms = platforms.unix;

    maintainers = [ maintainers.robbinch ];

    mainProgram = "aacgain";

  };

}

    license = licenses.lgpl3;

    platforms = platforms.linux;

    maintainers = with maintainers; [ nico202 orivej ];

    mainProgram = "aeolus";

  };

}

    license = licenses.gpl2;

    maintainers = [ maintainers.mrVanDalo ];

    platforms = platforms.all;

    mainProgram = "aj-snapshot";

  };

}