Implementing private IP option in settings

[spectre-speer]

Has this issue been covered in the Wiki?

• [x] I have read the Wiki and my issue is not covered.

Is there an existing issue reported already?

• [x] I have searched the existing issues, it does not exist.

Describe the new feature you would like

Hello! I was going through the network settings and I love that I can display my public IP in the dropdown menu, however I noticed there's no option to add my private IP address. I feel like it'd help a lot to have that as well since I run LAN servers on this device sometimes. Thank you!