add Nintendo Entertainment System

[pinobatch]

Consider expanding beyond handhelds. Some steps of this:

• [x] Find a couple of maintainers to take care of the entries database
• [x] Create a "nesdev" database repo (equivalent to https://github.com/gbdev/database) https://github.com/nesdev-org/homebrew-db
• [x] Add entries for a game and a tool, to test categories. Could use <plug>Thwaite and 240p Test Suite</plug>
• [ ] Add filters and specific NES pages on the frontend
• [ ] Add NES emulation capabilities on the frontend with binjnes or RusticNES https://github.com/gbdev/virens/issues/51