Now I have the opportunity to make a printed circuit board on a home CNC machine. The machine is controlled by the "CANDLE" program, which requires an input file containing G-codes as an input file. Is EasyEDA able to export a file in a format for a CNC machine? (*.nc, *.ncc, *.ngc, *.tap. *.txt) Maybe there is some other possibility to convert export formats of EasyEDA to the above formats? Thank you in advance for your answer!
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
EasyEDA dies not currently support export to CNC compatible codes.
So you will have to use some external 3rd party tools.
This topic may help you:
https://easyeda.com/forum/topic/how-to-use-3d-printer-to-print-PCB-exported-as-pdf-7d1e7e9f97454d7aac31619fef8fb5c4
A few people have reported some success with Flatcam.