Refactor LiveStreamWorker::setup() method

Signed-off-by: Rafał Malinowski <rafal.malinowski@corp.bluecherry.net>
No need to check for timeout in thread during stream connection time

Signed-off-by: Rafał Malinowski <rafal.malinowski@corp.bluecherry.net>
Better debug message in LiveStreamThread::start

Signed-off-by: Rafał Malinowski <rafal.malinowski@corp.bluecherry.net>
No need to check for timeout in thread during stream decoding

Signed-off-by: Rafał Malinowski <rafal.malinowski@corp.bluecherry.net>