deleted unused files, renamed lqs main file, startup improved

.gitlab-ci.yml

configuration/engine.ini

libraries/security/user.py

modules/communication/liquidsoap/communicator.py

modules/liquidsoap/__init__.py

modules/liquidsoap/engine.liq

modules/liquidsoap/readini.liq

modules/liquidsoap/unused.alsa.liq

modules/liquidsoap/unused.dynamicsources.liq

modules/liquidsoap/unused.inToOut.liq

modules/liquidsoap/unused.inputToOutput.liq

modules/liquidsoap/unused.library.liq

modules/liquidsoap/unused.playd.liq

modules/liquidsoap/unused.playlist.liq

modules/liquidsoap/unused.pulse.liq

modules/liquidsoap/unused.record.liq

modules/liquidsoap/unused.simpleplayer.liq

modules/liquidsoap/unused.stream.liq

modules/liquidsoap/unused.test.liq

modules/liquidsoap/unused.tester.liq