[Feature] Show taken ports

[S-Maciejewski]

Please describe the feature you want this project to offer
The application should display the information about taken ports (and processes that occupy them , but perhaps this should be a separate issue)

Describe the solution you'd like
As written above, perhaps this functionality could be selected using flags for the app (separate issue for implementing commandline arguments handling?)

[DarthBenro008]

@S-Maciejewski right now there is a function in network.go named PortChecker() which gives you the unavailable ports when you feed in a list of ports, maybe you could try tinkering with it to display the most popular taken ports. Eg: 8080,80,443,5432,etc