gnu: supercollider: Update to 3.11.0.
This also restores IDE support.
* gnu/packages/audio.scm (supercollider): Update to 3.11.0.
[outputs]: Add an "ide" output.
[configure-flags]: Enable Qt IDE, fortify source and build scsynth as a
shared library.
[phases]: Do not delete no longer existing failing tests and add
an 'install-ide phase.
[native-inputs]: Add qttools and ableton-link.
[inputs]: Add qtbase, qtdeclarative, qtsvg, qtwebchannel and qtwebsockets.
[propagated-inputs]: Add qtwebengine.
Signed-off-by: Marius Bakke <mbakke@fastmail.com>