Is there a way to "install" a snapshot?

I sort of assumed I could do something like this:

```
cs install -r sonatype:snapshots metals:0.11.9+128-92db24b7-SNAPSHOT
```

But when I try this I get:

```
❯ cs install -r sonatype:snapshots metals:0.11.9+128-92db24b7-SNAPSHOT
https://repo1.maven.org/maven2/org/scala-lang/scala-library/maven-metadata.xml
No new update since 2022-10-08 20:29:56
Exception in thread "main" java.lang.Exception: coursier.install.AppArtifacts$ScalaDependenciesNotFound: Can't find a scala version suffix for org.scalameta::metals:0.11.9+128-92db24b7-SNAPSHOT (likely a non existing module or version)
at coursier.install.AppDescriptor.artifacts(AppDescriptor.scala:109)
at coursier.install.InstallDir.update$1(InstallDir.scala:271)
at coursier.install.InstallDir.$anonfun$createOrUpdate$22(InstallDir.scala:417)
at coursier.install.InstallDir.$anonfun$createOrUpdate$22$adapted(InstallDir.scala:416)
at coursier.install.Updatable$.get$1(Updatable.scala:61)
at coursier.install.Updatable$.$anonfun$writing$1(Updatable.scala:106)
at coursier.cache.CacheLocks$.loop$1(CacheLocks.scala:71)
at coursier.cache.CacheLocks$.withLockOr(CacheLocks.scala:95)
at coursier.install.Updatable$.writing(Updatable.scala:106)
at coursier.install.InstallDir.createOrUpdate(InstallDir.scala:416)
at coursier.install.InstallDir.createOrUpdate(InstallDir.scala:96)
at coursier.cli.install.Install$.$anonfun$run$7(Install.scala:127)
at coursier.cli.install.Install$.$anonfun$run$7$adapted(Install.scala:114)
at scala.collection.immutable.List.foreach(List.scala:431)
at coursier.cli.install.Install$.run(Install.scala:114)
at coursier.cli.install.Install$.run(Install.scala:22)
at caseapp.core.app.CaseApp.main(CaseApp.scala:149)
at caseapp.core.app.CommandsEntryPoint.main(CommandsEntryPoint.scala:115)
at coursier.cli.Coursier$.main(Coursier.scala:118)
at coursier.cli.Coursier.main(Coursier.scala)
Caused by: coursier.install.AppArtifacts$ScalaDependenciesNotFound: Can't find a scala version suffix for org.scalameta::metals:0.11.9+128-92db24b7-SNAPSHOT (likely a non existing module or version)
at coursier.install.AppDescriptor.$anonfun$processDependencies$9(AppDescriptor.scala:231)
at scala.Option.toRight(Option.scala:485)
at coursier.install.AppDescriptor.processDependencies(AppDescriptor.scala:231)
at coursier.install.AppDescriptor.artifacts(AppDescriptor.scala:107)
... 19 more
```

Is this meant to work, or is there any way to achieve this?

Reproduce the `cs install` command and start in `modules/coursier-install/src/main/scala/coursier/install/AppDescriptor.scala`, especially `artifacts` and `processDependencies`; the stack trace identifies these entry points. Check how the install command handles the snapshot coordinate, then verify that the requested snapshot can be installed or that its limitation is clearly reported.

Written by the indexing model from the issue text.