(feature request) - Introduce address naming/labeling support

[sonyamann]

I'd like to be able to name addresses in the "Receive" tab based on what I use them for.

I would also like to be able to save other people's addresses in some kind of "Contacts" section and name those as well. That's more tentative since people roll to different addresses often (I think? Actually not sure how common that is)

[lightnode]

The ability to designate a purpose or a job per address would be a great feature, and will open the door for more robust organization and budgeting tooling in the future.

Contacts list should be a standard feature. You can always label a wallet as one you share between a friend, or even have the ability to add Tags per address?