[feature] allow QR to point to an `.setup.json` address about dsidl HOT 4 CLOSED

Added (though in a slightly different way) in e1f665b

What I did is put the JSON right into the QR itself as my goal in this is to a very simplistic downloader and that's simpler imo.

It supports either arrays or objects, with arrays simply being a list of URLs that it prompts the user for location/name like normal and objects allowing you to set both the URL and the output path. Examples:

[
    "It'll print anything that doesn't start 'http'",
    "https://example.com",
    "http://uwu.xn--rck9c.xn--tckwe",
    "Thanks for downloading!"
]

{
    "sd:/example.html": "https://example.com",
    "": "Comments still work",
    "sd:/uwu.html": "http://uwu.xn--rck9c.xn--tckwe"
}

from dsidl.

Added external scripts in cc5b3a4, I did it a little differently as I don't particularly like relying on file extensions so to start one you put this in a QR:

{"dsidl:src": "https://example.test/script.json"}

("dsidl:src" was chosen since : makes it an invalid FAT path)

then the script file is:

{
    "dsidl": 1,
    "script": {
        "/program.nds": "http://example.test/data/program.nds"
    }
}

or such, with "dsidl" being a version number as a sanity check and incase it changes significantly in the future and "script" being the same as above, an object or array.

I did "script" instead of "files" since if I add unzipping I'll probably do it with either "sd:/file.zip": "unzip:/destination/path" or so or maybe making the items into objects so you can specify an action like in UU, imo works better together as then they can be mixed together in any order, download unzip download unzip or so.

from dsidl.

Id say this is an fair compromise,

so you can have

{
   "/game.nds":"https://example.com/roms/game.nds",
   "dsidl:src":"https://example.com/roms/game.json",
}

and have game.json pont out an series of other files needed as well that may or may not update at some point?

EDIT: I am also working on making release-workflows for you so you can just write an new release and have an QR code that points to the latest release always

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testing dsidl:src and it appears to work, however it does not prompt the user where they wish to have the file saved, and instead defaults to sd:/

opening new issue specifically for this

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