Cartridge metadata editor

[nesbox]

add following metadata to cart:

1. title
2. author
3. description
4. tags
5. input method (gamepad/mouse)
6. ...

and implement method to edit meta info

[nesbox]

added cartridge metadata like in example below:

-- title:  game title
-- author: game developer
-- desc:   short description
-- script: lua (or moonscript)
-- input:  gamepad (or mouse)

function TIC()
	cls()
	print("HELLO WORLD!")
end

to enable Moonscript use -- script: moonscript tag

[HomineLudens]

What about add also the palette? In a way similar to the config file?

[nesbox]

@effer will do, pls create separate issue. thanks