Support links in using file directive (implements #1328)

[ivan-klass]

Scala Tooling Spree 15.05

see #1328

[ivan-klass]

git+ssh is not supported by coursier and should be addressed there - currently only HTTP is assumed:

coursier.cache.internal.Downloader.Blocking.doDownload

[ivan-klass]

@majk-p @tgodzik It works! Indeed, dependencies are resolved recursively already.

out/test.scala:

//> using file https://raw.githubusercontent.com/softwaremill/sttp/refs/heads/master/examples/src/main/scala/sttp/client4/examples/json/GetAndParseJsonCatsEffectCirce.scala

./mill 'cli[3.3.6].run' out/test.scala:

Got response code: 200
Right(HttpBinResponse(87.116.164.191,Map(Accept-Encoding -> gzip, deflate, Host -> httpbin.org, User-Agent -> Java-http-client/17.0.13, X-Amzn-Trace-Id -> Root=1-6826f31e-7030221a5448052d12774af8)))

[Gedochao]

Note: need to fix formatting & regenerate reference docs for the CI to pass.
https://github.com/VirtusLab/scala-cli/blob/main/CONTRIBUTING.md

[Gedochao]

It's fine to skip git+ssh IMO, we don't support that anywhere else, either.
The solution looks good so far, just need to address the TODOs and add tests

As for tests, maybe can reuse stuff from scala.cli.integration.RunGistTestDefinitions.

[Gedochao]

Looks good, we just need a test at this point.
As noted earlier, you should be able to reuse stuff from scala.cli.integration.RunGistTestDefinitions.

[ivan-klass]

@Gedochao thanks, please take a look on the test added