Make Picard work in single instance mode

Currently, running picard always spawns a new instance. It would be useful to pass the arguments to an already running instance (if exists). The best way to achieve this is to utilize named pipes, they work on all supported operating systems (i.e. Windows, Linux, MacOS). This project is part of the big Picard 3.0 update. To learn more, read: https://github.com/skelly37/GSoC-2022