Added Config File & Top X ports

[bee-san]

• Added Config File

1. If config file doesn't exist, downloads it
2. parses the config file as a struct

That's it. It was a lot harder to find the location, download the file if it doesn't exist, and parse it into a struct than I thought as there were so many exceptions 😅

To do next:

• Update opts with the values from the new struct config
• If it can't download the file, don't panic, inform the user and carry on

This is for #69

[bernardoamc]

This is super cool. :)

What do you think of extracting all this config logic into it's own module like we do for scanner and port strategy? We can try to keep the main.rs file lean and just care about argument parsing and orchestrating the other modules.

[bee-san]

This is super cool. :)

What do you think of extracting all this config logic into it's own module like we do for scanner and port strategy? We can try to keep the main.rs file lean and just care about argument parsing and orchestrating the other modules.

I'll work on this now :D

[bernardoamc]

Closing in favour of #185, which expands on the idea and solve conflicts. <3