Suggestion: myurl?static should tell parcel to copy the file as-is

[jpeg729]

There are many situations where people want a way to use a file as-is without its contents being mangled by parceljs. For example...

• In 🐛 Problem with loading manifest.json #235 <link rel="manifest" href="manifest.json"> transforms manifest.json into a .js file
• In Feature request: Serving arbitrary content #945 function MyComponent () { return <iframe src='./assets/index.html' /> } needed the html file to be unadulterated.
• In How to serve static files? #1080 axios.get('data/data.json',).then((data) => console.log(data)) inlines the potentially huge data.json and the http request fails.

What if we could add "?static" to those urls, and have parceljs simply copy the resulting file to /dist? Parcel should still mangle the filename for cache busting.

Going a little further, "?static&no-mangle" could tell parcel to copy the file as-is without mangling the filename.

Granted there are workarounds for all of the problems listed above, but it would be nice to have a simple and generic way to sidestep the problem without searching for the specific answer.

[DeMoorJasper]

The manifest should work when using .webmanifest
Related to #1087

[dandv]

Another use case: pro/paid libraries that detect when they have been tampered with. These might need to be served unmodified. CC @mkozhukh

[mischnic]

Similar to #2306

[mischnic]

With Parcel 2 alpha 3 and this parcelrc

{
  "extends": "@parcel/config-default",
  "transforms": {
    "url:*": ["@parcel/transformer-raw"]
  }
}

you can import files which will then be copied to the dist folder:

import file from "url:./static.json"
fetch(file)...

Regarding syntax discussion (protocol vs query) see here: #3477